Thomas Malthus proposed that ____
a. the food supply increases faster than the population
b. the population increases faster than the food supply
c. the food supply and population increase at the same rate
d. artificial selection is the key to evolution
e. natural selection is the key to evolution
ANSWER: b
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_____ alleles are both expressed
a. Dominant b. Codominant c. Pleiotropic d. Hybrid
Skeletal organization relating to limbs used for movement in vertebrates would be an example of homologous structures
a. true b. false
Soils of the tundra are very ____ due to ____
a. old; lack of precipitation b. young; lack of precipitation c. old; glaciation d. young; glaciation e. thick; high precipitation
The energy source for the light reactions is _____; the energy source for the carbon reactions is ______.
A. ATP, carbon dioxide B. sunlight, carbon dioxide C. sunlight, ATP D. ATP, oxygen E. Sunlight serves as the energy source for both sets of photosynthetic reactions.