A population of bats evolves because organisms from a separate bat population move into the population. This mechanism of evolution is known as
A. natural selection.
B. mutation pressure.
C. genetic drift.
D. gene flow.
Answer: D
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A more sustainable crop production technique called ______________ mimics nature by promoting biodiversity, providing multiple habitats for natural predators, and assuring that if one crop is lost there are others to replace it.
Fill in the blank(s) with the appropriate word(s).
Conduction has most to do with electrons and atoms
A. radiating energy. B. flowing past one another. C. changing identities. D. bumping into one another.
One disadvantage of using tidal power is that it ____
a. has high operating costs. b. requires a large amount of man power. c. cannot sustain the world's needs. d. adds pollutants to the air. e. utilizes technology that is cost prohibive
Describe the steps involved in the scientific method