Urbanisation\nDeforestation\nLittering/Pollution\nDisregard/Apathy\nIntroduced Species\n\nSo... what else?
214649
let's see, cutting down canada's ancient boreal forests by kimberly-clark so they can make KLEENEX, disgraceful.\ncutting down forests to expand factory farming only so that the animals can be slaughtered. horrifying.  by far it is human selfishness and lack of education that is destroying our world.
517359
Generally, there are three types of properties in a city:\n\nIndustrial, Commercial, and Residential\n\nThe industrial 'part' of a city is the lands upon which factories are located - It is where goods get manufactured.\n\nCommercial is where the stores are, and residential is where people live.
287243
Deforestation\n\nThe deforestation is a war against the mother nature, it brings all of our human miseries and it affects to every souls of our world. It changes the climate, brings flood, drought, destroys habitation of wildlife, destroys many plants and animals. Deforestation is the beginning of destruction of lives in our world. It is a war against our lives.
141173
http://geography.about.com/library/misc/blregions.htm
50149
1. continental drifting\n\nVery slow but substantial changes.\n\n2. changes in sun's energy\n\nSuspected to be large, but not yet demonstrated conclusively.\n\n3. variations in the positions of the earth relative to the sun\n\nFairly small effect. \n\n4. volcaic eruptions\n\nLarge observable effects in global temperature etc. \n\n5.greenhouse effect\n\nKeeps the earth about 60 degrees F warmer than it would be otherwise.\n\n6. global warming\n\nIn the last hundred years, the earth has warmed measurably. It is not clear if this is due to human activities or not, but many suspect it is.\n\n7. air pollution\n\nHas increased the ozone depletion at the poles in springtime, which introduces more UV lower into the air column. This might be changing the climate, although it is not known for sure.\n\nAlso blocks sunlight locally near sources of soot. It is not clear how big an effect this has globally, but it might be a cooling factor. \n\nAcid rain produced by S02 emissions has been involved in some deforestation, which has probably had an effect on the climate, but again this is not known for sure.
340339
How about:\noptical activity\npolarisation\nrheology\nelectrochemistry\ndiffusion\nsurface activity
408672
A human baby. And I'm as liberal as they come. Trees are of course important, whales less so - but they play a vital role. However; humans have rights, animals and plants (largely) do not.
40846
Just google pollution and recylcing.  You can get images for your report that way too.
357855
How about the effects of globalization on the developing world?\n\nThe effect of global warming on the Arctic
179679
a city tht is very polluted\n\nÆ
209454
Mutation\n\nGrowth\n\nReproduction/division\n\nStarvation\n\nPoisons\n\nOsmotic changes
245634
Lots of pollution. According to estimates , it polluted 330 thousand of hectares of land and increased the SPM by 55 PPM. more than 5000 adults developed breathing problems as a result of that and it resulted in more than 900 stillbirths in the next two years
44397
Hi.\n\nThere's plenty of information over this topic in various search engines.\nhttp://www.google.com/search?q=deforestation+wikipedia&btnI=I%27m+Feeling+Lucky\nhttp://www.google.com/search?num=100&q=%2Bdeforestation\nhttp://www.google.com/search?num=100&q=%2Bdeforestation+wiki\nhttp://www.google.com/search?num=100&q=+site:dmoz.org+deforestation\nhttp://answers.yahoo.com/search/search_result?p=deforestation\nhttp://www.google.com/search?num=100&q=+site:answers.com+%2Bdeforestation\nhttp://www.google.com/search?num=100&q=deforestation+forum\nhttp://answers.google.com/answers/search?q=deforestation&qtype=all&num=100&sort=qeprice%3AA%3AR%3Ad1\nhttp://search.msn.com/results.aspx?q=deforestation
457472
primary forest region\n\nWhite Pine Tree\nShield Grass\nHemlock
324858
We are overpopulated. Our activities are having a major impact on the environment. Many species of plant and animal have been made extinct and their blood is on our hands. We are no longer a population.. we are an infestation.
506681
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.
238319
large scale dumping of waste from industrial areas, oil spill, hot water discharged from industries and power plants, and hm...hunting of vulnerable marine species, destruction of coral reefs..for ornamental purposes..etc