Be an sky bet sport volunteer
If you think you care about environmental protection、Investing in environmental protection is only a matter for the government or environmental groups，It has nothing to do with you，Then you are wrong。Clean air、The elegant environment is shared by us，Everyone should do their part to protect the environment。You might say，I am not an environmental protection professional，Not aware of environmental protection knowledge，Career has nothing to do with environmental protection。These are not problems!As long as you want，Become an environmental volunteer!There are many things you sky bet sport do，For example, participating in environmental protection propaganda、Volunteer to help environmental protection organizations，Participate in charity activities such as fundraising、Planting trees, etc.，You have many choices。Being an environmental volunteer has become a fashion in many countries and regions。Reportedly，49% of U.S. citizens over the age of 18 have done voluntary work，Average voluntary work per person per week４. 2 hours，Equivalent to creating a value of US0 billion。Our country is also gradually getting environmental protection volunteers，For example, students from Beijing Forestry University volunteer to protect wild geese，Friends of Nature organizes Beijing members to go to the desert to plant trees on a voluntary basis。Many large foreign companies are recruiting talents，Pay special attention to whether the applicant participates in environmental protection charity activities，Judge their sense of responsibility and professionalism。Care for the environment，Improving the environment is a matter for each of us。
Understand and protect sky bet sport
Forests are vital to humans，Mainly manifested in: the forest provides oxygen for humans and animals to breathe，Absorb carbon dioxide emitted from industry and life；Forest regulates surface runoff，Conservation of sky bet sport sources，Avoid soil erosion；Forest reduces wind speed、Adsorb dust，Absorb toxic gases such as sulfide；Urban green belts absorb noise，Reduce noise pollution，Forests are the most active areas on earth and important for protecting biological diversity。However，Forests are disappearing rapidly。If the forest is lost、The earth’s ecosystem will collapse，Humanity will not be able to survive。my country’s existing forests 1. 3.4 billion hectares，ranked 5th in the world，But the forest coverage rate is only 14%，Far lower than 27% of the world average，Ranked 104th in the world，One of the countries with poor forest resources。Also，The quality of my country’s forests is not high，The proportion of middle-aged trees is larger，Accounting for about 71% of the country’s forest farm area，The proportion of young and middle-aged trees in the artificial forest is as high as 87%；Uneven distribution of forest resources，Southwest、Southeast、Many in the Northeast，Northwest、North China Young Master；Forest resources are severely damaged，Indiscriminate logging and illegal logging are repeatedly banned；Frequent forest disasters，Like a pest、Wind sand, etc.。We cannot live without the forest，Let us realize the severity of reality，From reuse paper、Refuse to use chopsticks to start，Protect our forests。
Furniture not sky bet sport precious wood
Now，A kind of blind comparison has formed in society、The pursuit of luxury consumption trend。The idea that things are rare makes people willing to spend high prices to buy and use furniture made of precious wood。However, this abnormal consumption concept is causing serious damage to nature。Take mahogany as an example。Redwood is a precious wood produced in tropical rain forests，Price rising every year。A pair of mahogany chopsticks costs a hundred yuan， A set of mahogany furniture worth tens of thousands of dollars、Millions of dollars，But some people still buy sky bet sport。sky bet sport is strictly prohibited to cut down mahogany trees in our country，my country’s mahogany furniture is imported from foreign markets。However, the earth’s ecosystem is a whole，Deforestation of tropical rainforest in any area will destroy the habitat of animals，causing overall ecological imbalance。Also，Precious wood is taken from rare tree species，Rare tree species are irreversible natural heritage。Ten thousand years ago，About 1/2 of the earth’s land area is covered with forests，About 6.2 billion hectares，Now there are only 2.8 billion hectares left。The world’s tropical rainforests are shrinking at a rate of 17 million hectares per year，sky bet sport won’t take many years，The world’s tropical rainforest resources will be completely destroyed。The rainforest is the lungs of the earth，The earth without lungs will be unimaginable。Protect the rainforest、Protecting rare tree species starts by refusing to consume precious wood products。
No sky bet sport wooden chopsticks
Disposable chopsticks are also called sanitary chopsticks、Convenient chopsticks，It is the product of the accelerated pace of life in human society and the development of social services to a certain stage，Once regarded as a sign of civilization。However，Reality shows，The so-called hygiene and convenience are just people’s illusory psychological expectations，Its use is essentially the same as breaking branches into chopsticks，Clean and disinfect with each meal、Multiple chopsticks ratio that does not require numerous production bases and cumbersome transportation processes，Unhygienic，Not convenient either。its production，It is a barbaric act of plunder，Its storage and transportation are accompanied by unavoidable pollution，And its use，Obviously unclean and wasteful。A big tree that has grown for 20 years，Only 6000--8000 pairs of chopsticks sky bet sport be made。my country produces 10 million boxes of disposable chopsticks every year，6 million boxes of which were exported to Japan、South Korea and other countries。The Japanese invented disposable chopsticks，But they don’t use the forest production on their own land，And it sky bet sport be recycled and used for paper making, etc.。my country’s forest coverage rate is less than 1/4 of Japan’s，Reducing forest accumulation by 2 million cubic meters every year to produce disposable chopsticks。Therefore，We advocate refusing to use disposable chopsticks when dining out，Refuse to use wooden pencils, etc. in daily study and work。
Save sky bet sport and recycle waste sky bet sport
In newspapers and television，We sky bet sport often see reports of some paper mills polluting the environment。A large amount of sewage has turned the water body black and smelly，Extinction of fish and shrimp，Farmland production on both sides of the Taiwan Strait is reduced or no harvest。Most paper production uses wood as raw material，The source of wood-forest is the basis for our survival，Is the lungs of the earth，At the same time, papermaking also pollutes the environment，So saving paper is equivalent to protecting our living space。In our busy study and work every day，Pay attention to the waste paper you are going to throw away，Maybe the reverse side sky bet sport still be used。Don’t just throw the waste paper into the trash sky bet sport even if it has no blank space。Recycling one ton of waste paper sky bet sport save 17 trees from being cut down，Produce 800 kilograms of good paper，Reduce water pollution by 35%，Save more than half of papermaking energy。my country’s waste paper recycling rate is very low，Import waste paper every year，1.37 million tons were imported in 1996 alone。We sky bet sport bring old newspapers from school and home、Old textbook、Gather scraps of paper, etc.，Send to scrap collection station。Choose recycled paper when purchasing paper，Support the recycling of waste paper with practical actions。You sky bet sport also tell your classmates and parents about the benefits of waste paper recycling，Everyone comes to recycle waste paper。
Reject sky bet sport packaging
In daily life，The food or items we buy often have two or three layers of packaging，Sometimes as many as four or five floors。1997 survey shows，The average annual packaging volume per person in my country is 10kg，Nearly 10 million tons of packaging waste nationwide every year，And this number increases dramatically with the growth of the economy。Producing packaging requires a large amount of metal、Glass、Paper and plastic，These packaging products become garbage after one-time use。American food packaging waste weighs half as much as household waste，The expenditure on packaging is equal to the farmer’s net income。It is a pity that the waste recycling rate in our country is very low。The recycling rate of paper in the European Community is 26%，Our country is 15%；The plastic recycling rate in Japan is 26%，Our country is 9.６%；The world average recycling rate for aluminum cans is 50%，Our country is 1%。This has caused huge waste，Causing serious pollution again。It is impossible to completely reject packaging，But we sky bet sport refuse multiple packaging，Reject excessive and overly luxurious packaging，Do not buy food or supplies with luxurious and complicated packaging。In some countries，Excessively packaged goods are outdated，Will be boycotted by consumers， And around us，Resisting excessive packaging still requires the joint efforts of everyone。
Reject sky bet sport items
In modern social life，Disposal and arbitrary disposal of goods is common，Especially the surge in the use of disposable items。According to statistics ，British people throw away 2.5 billion nappies every year；The Japanese use 30 million disposable disposable cameras every year；Japanese company distributes millions of batteries containing cadmium and mercury for free；Except for disposable pens，Americans throw away 18.3 billion razors every year、2.7 billion batteries、1.4 billion cubic meters of polystyrene plastic used for packaging， 3.5 billion paint cans，Plus enough sky bet sport and plastic to feed the entire world for a monthly picnic。Although disposable items do meet people's special needs to a certain extent，But it also wastes a lot of energy and resources、Produced a lot of garbage，Increased burden on the environment，Even cause pollution to the environment。Our country is a big country with a population of more than one billion， If you promote the use of disposable items，Consumption will be huge，Not only causes a waste of resources，And the waste generated will also bring unpredictable disasters。
Use sky bet sport on both sides
According to previous predictions by some so-called post-industrial society prophets，The use of computers will send paper into the exhibition hall of history。But the reality is exactly the opposite of the prediction；The annual consumption of writing and printing paper in the United States increased from 7 million tons in 1956 to 22 million tons in 1986，And paper consumption continues to increase。Of course，Paper sky bet sport be recycled， But the recycling process of waste paper also produces a large amount of hazardous waste。Printing paper must be recycled，All must go through a deinking procedure，Produces two major products: one is without ink、Fibers that sky bet sport be used to make paper，There is a lot of silt on the other side。 Recycled paper changes through a series of uses，From high-quality adhesive paper to newsprint to cardboard，Finally used as compost or used as fuel in the same production plant。In this process，The material properties of paper are decreasing。We know，Extend the life of items，sky bet sport reduce the speed of resource flow。Doubling the service life of the product，Equivalent to half the waste。Use paper on both sides，Reduce paper usage by half，Of course, this also reduces the waste paper output by half。
Understand and sky bet sport grassland
The vast expanse of prairie，Has benefited people for generations--providing resources for animal husbandry、Sand fixation、Prevent soil erosion and desertification, etc.。However，The actual grassland situation is worrying。Existing grassland in my country 3. 900 million hectares，Second only to Australia，Ranked second in the world，But the average grassland per capita is only 0. ３３hectares，About half the world average。The quality of grassland in my country is not high，Low-yield grassland accounts for 61. ６%，The country’s hard-to-use grassland accounts for about 5% sky bet sport total area５７%；Low production capacity，Australia respectively、United States、1/10 of New Zealand’s grassland production capacity、1/20 and 1/80；Severe degradation，90% of grasslands have been or are being degraded，Among them are moderately degraded (including desertification、Alkalinization) of 1. 300 million hectares，And increasing at a rate of 2 million hectares per year。The degraded grassland in northern and western pastoral areas has reached more than 70 million hectares，Accounting for about 30% sky bet sport total grassland area in pastoral areas。The cause of this crisis is overcrowding、Overgrazing、Climate drought and man-made destruction，Rulumafocai、Digging for medicinal materials、Mining and woodcutting, etc.。We should actively publicize the crisis of grassland resources，Refuse to consume Nostoc and other products that cause damage to the grassland ecology，Stop vandalism，Improving the utilization rate of pasture from a scientific and technological perspective。
No burning sky bet sport wild
When you are walking on the street，Worried about the dirty sky，When you are suffocating from the bad air，You will definitely sigh: the quality of our atmosphere is getting worse。The government has made great efforts to control the atmosphere，From controlling automobile exhaust、Resident Soot、Factory exhaust gas, etc. start，One of them is to control wild burning。We have entered a civilized society，We should no longer stay at the slash-and-burn farming method，Burning in the wild produces a large amount of smoke particles and carbon dioxide、Carbon monoxide，Reduce atmospheric visibility，Damage people’s health。Also，Grass and straw are important biological resources，We should return to nature in a natural way，Burning is a huge waste。and，Fires occur every year due to wild burning，Reports of burned forests and pastures。There are still people burning wasteland in the forest，Bake the trees to death，Destroy the birds at the same time、The habitat of wild beasts and insects，Destroy local ecological balance。We should promote composting of grass and leaves，Replenish into the natural ecology，sky bet sport should not be burned。
Do not dump garbage sky bet sport rivers, lakes and seas
Dumping garbage into rivers, lakes and seas，sky bet sport cause water pollution。The harm of water pollution is multifaceted。First，Directly affects industrial and agricultural water use and product quality。According to investigation，As of 198，The annual direct economic loss caused by water pollution in my country is as high as 37.7 billion yuan；The second is to damage the business environment，Reducing fishery production，And endanger human health。Such as the world-famous Minamata disease in Japan，It’s because of mercury、Serious public hazard incidents caused by cadmium contamination of water bodies；Again，Water pollution further reduces available water resources。According to research，Every cubic meter of sewage discharged，Polluted 14 cubic meters of natural water。Estimated to be 2000，The world’s sewage discharge will reach 600 billion cubic meters，If sewage treatment is not carried out，It is bound to pollute a large number of natural water bodies，Thus exacerbating the problem of insufficient water resources，Even lead to global water shortage；etc.。There are many causes of water pollution，But each of us sky bet sport make a difference in reducing this pollution as long as we pay attention。
Use more soap and sky bet sport detergent
Soap is made from natural raw materials-fat plus alkali。When soap is discharged after use，sky bet sport be broken down quickly by microorganisms。So relatively speaking，Soap production and use，The impact on the environment is slight。Compared to soap，Detergents have a greater impact on the environment。The manufacturing process of synthetic detergents produces a large amount of waste water and waste gas，its use，Especially the use of phosphorus-containing detergents，Added a series of environmental pollution，The phosphate in phosphorus-containing laundry detergent sky bet sport stimulate excessive growth of algae，When algae die, they overload the aquatic ecosystem with their own organic matter，Causing problems such as eutrophication of water bodies。Phosphorus-polluted waters contain rich fertilizers that feed algae growth，Excessive growth of algae causes oxygen depletion，As a result, the fish and shrimp in the waters died because they were unable to compete with the algae for oxygen。Rivers, lakes and seas polluted by phosphorus，Every city will form a death zone。Therefore，In order to minimize damage to the environment，We should all use more soap，Use less detergent。
sky bet sport faucet
In life，We often see faucets that drip or are left open after use。Maybe many people think that not much water will flow。Let us do a small experiment first，Use a measuring cylinder under the dripping faucet，200ml of water sky bet sport be connected in 15 minutes，Converted to nearly 20 liters per day，More than 7,000 liters per year。There are thousands of faucets across the country，It’s not a small number when added together。Our freshwater resources are extremely limited。Although more than 71% of the earth’s surface is water，About 13 in total.８.5 billion cubic kilometers，But there are 97.2% is unusable salt water，2% is polar and mountain ice and snow and fresh water that is difficult to use、Freshwater resources that sky bet sport be truly utilized by humans only account for one thousandth of the global water。Global annual freshwater use is increasing，More than 80 countries and regions, accounting for 40% of the world’s population, are short of water，About 1 billion people do not have access to pure water，10 million people die every year in developing countries from drinking unclean water。Such scarce freshwater resources are still being wasted and destroyed。Water is the source of life，Cherishing water resources means cherishing the future of mankind。Let’s start from around you，After using water、While washing hands, bathing, soaping and washing dishes，Turn off the faucet。
One sky bet sport for multiple uses
In recent years，Most of us have experienced the water shortage situation，We are already facing a serious water crisis。Our country is one of the 12 water-scarce countries in the world，Per capita water resources are less than 1/4 of the world’s per capita water，Ranked 110th in the world。And the distribution of water sources is very uneven，More than half of more than 600 cities across the country are short of water。With the development of industry and agriculture，The demand for water is skyrocketing。According to statistics，At present, my country’s agricultural production is reduced by about 1500-200 billion jins due to water shortage every year， Industrial losses are about 200 billion yuan。Since water is so scarce，We should develop a good habit of saving water，Try to use one water for multiple purposes。In daily life, we sky bet sport find many ways to use water for two or more purposes。Washing vegetables、Rice water sky bet sport be used for drinking by livestock，The water used for washing clothes sky bet sport be used for mopping the floor、Flush the toilet。You sky bet sport wash your feet when you wash your face，Then flush the toilet, etc.。 Some foreign environmentally friendly buildings，sky bet sport collect rainwater falling on the roof，Reuse it for watering flowers or cleaning the room...there are many other ways，As long as we have the awareness to save water，I sky bet sport think of more good ideas。Let’s practice it together!
Simplify sky bet sport
In recent years，More and more people are beginning to decorate their homes，And take this as a sign of improved living standards。I don’t know ，Renovating a house not only wastes a lot of resources，Also brought the health killer into the room。Let’s take a look at the hidden health hazards in newly renovated homes: Radon gas – found in building materials，induced lung cancer；Asbestos--a strong carcinogen，Exists in fireproof materials、Insulating materials、Cement products；Formaldehyde--a common indoor pollutant，Causing skin sensitivity、Irritation to eyes and respiratory tract，Exists in furniture adhesives、Sponge insulation material、Wall wood paneling；Volatile organic compounds--benzene, etc.，Exists in decoration materials、Paint、In varnishes and organic solvents，Mostly irritating and toxic，sky bet sport cause headaches、Allergy、Liver damage，Even cause cancer。Also，Some excessive decoration will also cause the house to bear too much weight、 Weakened earthquake resistance、Easy to burn、Fatal defects that sky bet sport easily cause fires and other fatal defects。So，We should try to simplify the decoration as much as possible。In addition to saving resources，You sky bet sport also avoid bringing hidden dangers home。If you want to decorate，We should also try to use environmentally friendly building materials，Also adopt the cultivation of green plants、Open windows for ventilation，Reduce indoor pollution。
sky bet sport lights
Most of us enjoy the convenience brought by electricity every day，Our activities at night are almost inseparable from the lighting of electric lights。Currently，The electricity consumed by electric lights comes from sky bet sport power、Nuclear energy or firepower，All are obtained at a significant cost to the environment and resources。Hydropower facilities have changed the ecological status of rivers；Nuclear power plants export nuclear waste；Thermal power coal burning produces a large amount of harmful gases and dust，Polluted the atmosphere，endangering human health，causing acid rain，Increased global greenhouse effect。Since the Industrial Revolution，Humans burn a lot of coal，This is the main reason why the carbon dioxide content in the atmosphere has increased by 30%。 The increase in global temperature is felt by each of us。The greenhouse effect melts the icebergs in the Arctic and Antarctic，Sea level rise， Climate anomaly，leading to a series of ecological and social crises。So the electricity we consume is not clean，Not endless，But limited，Putting huge pressure on the environment。We are very dependent on electricity，We should save electricity， Avoid unnecessary waste。You may think that turning off a light won’t save much electricity，But if we all pay attention to this at all times，The benefits of saving electricity are considerable。
Use cloth bag
Let’s go shopping at the store or farmer’s market，Almost every item comes with a plastic bag，After returning home，These plastic bags are often immediately thrown into the trash sky bet sport。As garbage，Plastic bags leave our homes，But they have not disappeared from this world。In most areas of our country，Plastic bags are everywhere，Encountering windy weather，They will fly in the air，Landed on the branch、In the river，Affecting health and city appearance。Plastic bags increase the amount of garbage，Occupying farmland，Contaminated soil and groundwater。What’s even more serious is that plastic cannot degrade in nature for hundreds of years，If burning，Toxic gas will be produced again 。Just for temporary convenience，But abandon the garbage to future generations。Is this appropriate??Take Beijing as an example，If the average person consumes one plastic bag per day (about 0.4 grams)，4 tons of plastic bags are thrown away every day，The raw materials alone are worth 40,000 yuan。Small plastic bags are really harmful。We used to use reusable vegetable baskets and cloth bags to shop for groceries，The widespread use of plastic bags is only a matter of recent years。We should restore the good traditions of the past。German young people are proud to carry cloth bags when shopping，Let us also follow this green fashion。
No sky bet sport non-degradable lunch boxes
Plastic products are made from petroleum，The raw materials of the plastic industry are themselves by-products of the petroleum industry，Plastic production not only consumes a large amount of non-renewable resources，And produce a lot of pollution。Wide use of non-degradable plastic lunch boxes，Produces a lot of waste。 The reuse value of discarded plastic is low，High reproduction cost (about 3,000 yuan/ton)，And it is difficult to recycle。Not easily biodegradable in the environment (according to research，Plastics buried underground take hundreds of years to degrade)，Incineration will cause secondary pollution。Extensive use and improper disposal of non-degradable plastic products，Reduced land quality、Waste of resources、 Increased environmental pressure，Not only will our generation live surrounded by garbage，And it will also cause our descendants to lose the land to survive，Facing difficult-to-solve pollution problems。In fact，Plastic lunch boxes have very limited functions，People sky bet sport easily replace it with durable goods。Therefore，We should use as little non-degradable plastic lunch boxes and other non-degradable plastic products as possible。
Do not take soil at sky bet sport
We all like green trees、Green grass、A vibrant environment with wildflowers，I don’t like ravines，Lifeless land 。A beautiful environment comes from each of us cherishing and maintaining it。The growth of various vegetation depends on the nutrient-rich topsoil on the surface，If we go to the roadside、Hillside、Go and dig soil in pastures and other wild areas，Not only destroys the original vegetation，And took away the top soil，It’s like tearing open wounds on the mountains and grasslands，These wounds will get bigger and bigger under the erosion of rain and wind， causing grassland degradation，Serious cases sky bet sport also cause mountain mudslides、Landslides and other vicious ecological events。Our country loses hundreds of millions of yuan every year due to mudslides and landslides，Especially mudslides and landslides near roads and railways，Causing hundreds of casualties every year ，Damaged farmland、Railway and highway facilities，causing serious consequences，And these and the roadside、The destruction of vegetation on the hillside is directly related。Thousand Miles Long Causeway，Falled in an ant nest，We should avoid even small acts of vandalism，Also promote planting trees and grass，Road protection and slope protection，Beautify our living space。
Do not sky bet sport
Blue Peacock，Gorgeous tail screen、Elegant posture，Exclusive color due to the special color of the neck: peacock blue。The blue peacock is regarded as a fairy bird in India and other countries，Sacred and inviolable，Available with us，But sky bet sport became a dish in the restaurant。Some people also place peacocks in front of restaurants to attract customers、Slaughter now and eat now，No mercy、Shame。Chewing the beautiful peacock，Snake and other abominable things will be killed without mercy。No less than 6,000 tons of snakes are eaten in China every year，Snake-eating is rampant causing rats to get out of control，There are at least 3 billion rats in urban and rural areas across the country，15 billion kilograms of grain are lost every year，Equivalent to the total food consumption of the entire population。Ecological imbalance further leads to reduced food production。Recently, the State Forestry Administration and the Wildlife Conservation Association issued a notice not to eat wild animals，An initiative to establish a new concept of diet。Those who eat game have been called gluttons since ancient times，Some people are not ashamed yet、On the contrary, I am proud of sky bet sport，Think of sky bet sport as power、Wealth、A symbol of identity，What monkey brain、Bear Paw、Deer whip、Baby baby fish、Pangolins...eat everything，Illegal as well、Immoral and unbecoming of a demeanor。All civilized people should refuse to eat game。
Do not wear clothing sky bet sport animal fur
Some people say，Behind every beast pelt there may be a murder。This sounds scary，But think carefully，Never excessive。 Because each beast has only one skin，sky bet sport you still save the life of a tiger by seeking its skin??Some people chase the so-called fashion (which is actually already outdated)，Indifferent to wild life。There is a story: a girl’s mother bought a fox fur coat ，But it caused my daughter to feel sad，Because the book says，Female foxes give birth to approximately 58 cubs each time。She made a painting，In the painting, there are a group of pitiful little foxes crying to the girl with their mouths wide open: Your mother wanted to wear a fur coat，Kill our mother !Later，This painting was selected for the International Children’s Environmental Protection Painting Competition，The organizing committee specially printed a poster for it。There is a line of eye-catching characters on the poster: Your mother is wearing a fur coat，More than 100 little beasts lost their mother!As you sky bet sport imagine，Wear clothing made of wild animal fur，What a tragic situation behind it。Currently，Many civilized countries around the world have begun to boycott animal skin clothing，This is a manifestation of the awakening of human ecological and moral consciousness。
Promptly report behaviors that damage the sky bet sport and ecology
Now，Many of us envy the beautiful environment in European and American countries，However, they have also experienced periods of environmental destruction and pollution，It is environmental awareness、Laws, social ethics and public supervision form a good social atmosphere，Only achieved today’s environmental protection achievements。Beside the highway in the United States，You sky bet sport often see fallen trees，Occasionally you sky bet sport find animals that have been killed，But no one took it home，Otherwise you will be prosecuted and punished。In Singapore, laws and public supervision are used to restrict behaviors that damage the environment。Our country has also formulated many laws and regulations on environmental protection，Such as "Environmental Protection Law"、"Law on the Prevention and Control of Environmental Pollution by Solid Waste"、"Noise Control and Prevention Law", etc.，To sanction bad behavior that damages the environment。Every one of us is a direct victim of environmental damage，We should learn to use the law to protect ourselves。When you find wild animals poached、Discharge sewage into rivers、In case of deforestation and other behaviors，Should be reported to law enforcement authorities promptly，And report it to the news unit，Let public opinion condemn it。Only we participate together，In order to build a living space with a beautiful ecological environment。
