Input: Answer this question:
In order to survive, all organisms must have
Answer: energy
Input: Answer this question:
The growth of which of the following usually occurs first in primary succession on a bare rock?
Answer: Lichens
Input: Answer this question:
During the fall reproductive season, the belly of a male brook trout becomes bright orange. The orange belly provides some camouflage and helps attract females. This trait evolved in brook trout because, compared to males with pale bellies, males with bright orange bellies are more likely to
Answer: fertilize eggs to produce offspring.
Input: Answer this question:
A boy pulls a sweater off over his head. His hair is attracted to the sweater due to
Answer:
an electrical charge