Despite competing in sub-zero conditions, hockey players notoriously have some of the sweatiest and smelliest equipment in sport. Using your knowledge from the metabolic processes unit, explain why the body's thermoregulatory systems are needed to reduce temperatures even in these cold conditions.

Thermoregulation, by definition, is a mechanism by which mammals maintain body temperature by tightly controlled self-regulation, no matter the temperature of their surroundings. Temperature regulation is a type of homeostasis, which is a process that biological systems use to preserve a stable internal state to survive. Ectotherms are animals that depend on their external environment for their body heat, and endotherms are animals that use thermoregulation to maintain a somewhat consistent internal body temperature to survive, even when their external environment changes. Humans and other mammals and birds are endotherms.

answer: c

explanation:

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).