In a bear population, the allele frequency of a gene for brown fur increases from 15 percent to 25 percent. What is happening to
the population of bears? A. The population is evolving. B. The population is decreasing. C. The population is expanding. D. The population is not evolving.
Sea snails help to keep the algae's population from growing to high. And the algae provides the sea snails with energy from the snails eating it as a food source.
