What are three environmental factors that could cause human extinction?
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Sun explode. Sun go out. Ceres-sized bolide hit Earth.\n\nNo disease, weather or ecological phenomenon could completely wipe us out. Even we couldn't wipe ourselves out; we are just to numerous and smart.
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The natural causes of animal endangerment are due to Nature.. The man made ones are due to man...\n\nAnd while I'm helping you a Meter is exactly a meter long.. OK.\n\nHope that helped
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oil, coal, natural gas.\n\nancient plant matter.\n\nIt depends on how old the human is. An adult has 206.\n\nIt isn't. But it might be just as bad, depends on the chemical and the duration and level of exposure.\n\nHuman Immuno-deficiency Virus.
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11.B Cause\n12.C The atmosphere keeps Earth warm.\n13.B Feeding habits and migration.\n14.D While and however.\n15.A A paragraph should have one main topic.
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These are some of environmental hazards that I can think of:\n>>Changed quality of animal habitat caused by pollution or any interference which is unsafe or unhealthy for animals to live.\n>>Forestfires.\n>>Increased predation by another species.\n>>Diminishing water and food supply resources.\n>>A disease epidemic in a certain animal habitat.♥\n>>
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pollution can cause poisonous run off, and destroy the habitat of water animals, it would also hurt the animals who drink from the water source. It causes smog, its very bad to breath, with all of the pullution building uo it traps heat in earths atmosphere, causing global warming, the planet heats up. theres also alot of other tihngs.
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Old age, the Earth will gradually become uninhabitable over a very long period of time until the time comes when the few million people that are left only have legends about how the planet once supported billions.\nNuclear war,  pandemics, possible global warming would be as hiccups along the way.
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these are some Mega threats that endanger the planet and some solutions\n\nover population,erosian,over pumping of carbon aquifiers(deep wells)\ndesertification,rising seas,land loss,deforrestation.excess carbon emissions,mass extinction of species and global warming.\n\nDEFORRESTATION if it continues ,is that we could end up looking like Mars.Without an atmosphere ,without water,without air,with out life\n\nthe forrests make most of the water that we can drink or use for plant growth(sweet water) \nsome is condensed from the sea but that reaches only the coastel aereas .\nthe bulk ,comes from the forests ,and the rivers come from the rainfall which comes from the trees ,\nand the trees with precipitation,feed the rivers when it is not raining and keep them running all year round.\n\nIf we kill all the trees,we kill the rivers .we kill the rain. we kill us.\nthe trees also absorb the heat in the day and heat up the place in the night ,so they keep the temperature confertable to live in.\n\nin the dessert the nights are freezing cold and during the days you burn up\n\nCARBON MONOXIDE\nthe trees absorb carbon emisions ,which is poison to us and they produce oxygen which we need to breathe.\n\nso in short the trees produce the air that we need to breathe.\nthey also produce wood which is usefull and a wide range of food such as fruits\n\ndeforestation must be stopped before desertification goes out of control and consumes the planet.\n\nDESERTIFICATION\nthe sahara is growing by 7 kilometres every day.\ntwo major desserts in northern china are growing together making one giant dessert and,causing dust storms so making thousands of people refugeese\n\nthe trees evaporate a mist which ,which protects us from the strong rays of the sun .\n\nthe planet is drying out at an alarming rate.\n\nin the days of the dinasaurs this planet was under an aquiferus manta ,a mist that covered the entire earth ,and there were no desserts .\nCount how many there are today,and all of them are as a result of mans actions.\nthe sahara used to be forrests\narabia ,irak ,iran used to be fertile lands in biblical times\nGhengas Kahn burned all the forrests here and filled the well with water and so turning vast lands into dessert.\n\nBad agricultural practises is turning vast teritories into desserts ,because of over grazing and the exessive pumping of carbon aquifiers ,the surface aquifiers already having been depleted.\nAnd the use of fertilisers and heavy machinery that compacts the ground which raises the salt in the soil.\nModern agriculture today is doing the same as ghengas kahn but in much bigger territories.\n\nAnd because agricultural lands are lost, farmers are forced to cultivate highly erodable lands, to keep up with the growing demand for food.an extra 70 million people each year and this is increasing\nthe world population has doubled in the last 50 years the fasted increase ever since the first homo sapian.\n\nEROSION\nsoil erosion is almost always as a result of human intervention.\nthe trees are cut down and these trees existed to provide a cover against the rays of the sun which now dries out the soil ,and the wind can than easily blow away the dust that is formed ,------this is wind erosian\n\nbecause the trees are no longer there, whose roots bound the soil together ,and because their canapies of foilidge no longer exist the rain now has easy acces to the unprotected ,now dry surface and the rain waters wash away the top soils ,------this is water erosian\n\nfarmers plow large plots of land to plant maize or wheat or what ever and as happened in the 20s in the USA,they plowed in straight lines.when the winds came they blew alonfg the straight lines and picking up speed removed millions of tons of top soil(wind erosian) turning vast teritories into dessert deprived of arable soil\n\ntoday the farmers plow in circles and curves to prevent this building up of speed by the wind,\n\nbut still vast sections of land are exposed to the sun whi
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It is a symptom of a much bigger problem, namely overpopulation. This world is finite and if humans don't find a way to thin the herd mother nature will.
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A huge die-off caused either by a plague, or poisoned water, or starvation. The planet will turn on us and wipe us out. Then it will start all over again with bacteria and salt water.
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How can we save humans from extinction.
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river beds dry up\ncrops can be destroyed by parasites that thrive in heat\nshortage of water can cause heat strokes and dehydration in animals and people \nThe crime rate increases as people get agitated in extremes of heat
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1. Global warming of the surface layers of the oceans reduces the upward transport of nutrients. \n\n2. Plankton growth becomes unstable when the supply of nutrients is reduced. \n\n3. This has a negative impact on the food chains of the oceans  - demograghic species shifts occur in fish who are reliant on plankton for nutrition. In turn, fish who feed on THOSE fish are either forced to move to new feeding grounds or are themselves in danger of extinction.\n\n4. This in turn impacts on the marine food chain available to humans, putting strain on resources elsewhere (more reliance on crops and alternative forms of proteins, which may not be asgood for us). Thus gobal warming could store up a future of disease for mankind.\n\n5. Plankton also acts (along with rainforests) as the earth's 'filter' so a reduction in plankton also has an impact on the uptake of the greenhouse gas carbon dioxide into the oceans. Hence more greenhouse gasses are in the atmosphere because there are fewer plankton to absorb them. In addition, the few plankton that are left become saturated.\n\n6. Scientists speculate that eventually global warming will cause the collapse of the plankton ecosystem and, when this happens, all food chains leading up from plankton will be in danger of extinction.
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The most noticable would be CAR FUMES! Look there are as many cars as pets in the USA, I swear some of them just let too much pollution! You don't need a detail answer, all you need is imagination, just look at all the cars, factories, machines, trucks and every single one of those! They affect the climate dramatically, without even mentioning the military and nuclear weapons being produced there! \n\nUSA is in deep growing danger!!!
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Deforestation is the loss or continual degradation of forest habitat due to either natural or human related causes. Agriculture, urban sprawl, unsustainable forestry practices, mining, and petroleum exploration all contribute to human caused deforestation. Natural deforestation can be linked to tsunamis, forest fires, volcanic eruptions, glaciation and desertification. The effects of human related deforestation can be mitigated through environmentally sustainable practices that reduce permanent destruction of forests or even act to preserve and rehabilitate disrupted forestland.
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Our beautiful earth is being destroyed. Thousands and thousands of trees are being cut down in short amounts of time, and trees give us the oxygen we need to survive. People are polluting the earth by littering, dumping trash into rivers, lakes and oceans. Car exhaust and smoking causes smog and makes the oxygen layer in our atmosphere thinner. If we don’t take action, our earth will end up like one big junkyard.
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Try This\n\n"http://en.wikipedia.org/wiki/Environmental_Psychology"