In 2008, the United States generated about how many million tons of garbage?
a. 100
b. 200
c. 300
d. 400
e. 500
ANSWER: e
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According to the evidence collected so far, the animal kingdom is _____
A) monophyletic B) paraphyletic C) polyphyletic D) euphyletic E) multiphyletic
The surface area of the inner mitochondrial membrane is greatly increased by ____
a. cristae b. the matrix c. centrioles d. nucleoli e. microfilaments
Why has Atlantic cod evolved to mature at a younger age and smaller size?
a. DNA damage from radiation released accidentally from nuclear power plants b. unknown causes c. food competition from other predatory fish d. intraspecies competition e. overexploitation by fishing
Which step in the evolution of life is the most complex and probably occurred last?
A. Formation of amino acids B. Formation of protein–RNA systems C. Formation of membrane-bound protocells D. Spontaneous formation of organic compounds under abiotic conditions E. Formation of ATP