IN AN ARCTIC ENVIRONMENT, A POLAR BEAR POPULATION WILL INCREASE AS A BLACK
BEAR POPULATION

NO

Explanation:

Decrease

Explanation:

Black bears are not well evolved to survive in arctic temperatures like polar bear are so the population of black bears in that area would probably decrease until it is wiped out because they can't survive there.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.