Sunday, February 26, 2012

Environmental changes in the 20th century?

a little help here...i am doing practice problems for my ap environmental science exam and i am stuck on this one. any constructive input would be appreciated! thanks.....



Which environmental change in the 20th century is mismatched with its percentage difference???

a) population increased 240%

b) agricultural land cultivation decreased 20%

c) we are feeding 100% more people than we did in 1950

d) since 1950 we have cut 1/3 of the world's forests

e) trick question- all of these are correct!



cheers!Environmental changes in the 20th century?E seems likely

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