What is the most accurate definition of microevolution?
a. heritable changes in the genetics of a population
b. natural selection leading to adaptation
c. the occurrence of a series of mutations over time
d. the origin of new species through natural selection
e. the origin of major new forms of life over time
ANSWER: a
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single photon?
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The difference between gross primary productivity and net primary productivity is
a. the amount of sunlight reflected by plants. b. the rate of photosynthesis of autotrophs. c. determined by the amount of energy used for plant life processes. d. the rate of herbivorous consumption of autotrophs. e. negligible.
A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as
A. glycogen B. chitin C. amylose D. starch
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What will be an ideal response?