Recycling programs, especially for aluminum cans, have become very successful because it requires only ________ of the energy needed to make a can from bauxite ore
A) 10% B) 5% C) 55% D) 40% E) 20%
B
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It is even more important to protect the boreal forest biome than most other biomes because they help reduce global warming in all of the following ways except
A) preventing the release of methane trapped in peat and permafrost beneath the forest. B) storing massive amounts of carbon. C) being fire resistant. D) All of these are ways in which the boreal forest biome protects us from harmful effects of global warming.
Explain the concept of convergent evolution using an example
Including pairs of enantiomers, how many different 2-ketohexoses are there?
A) 2 B) 4 C) 8 D) 16
Rachel Carson's book, ________, pointed out the dangers posed to the natural environments and humans by pesticides
A) Nature B) Walden C) The Population Bomb D) Man and Nature E) Silent Spring