Why does sperm development occur in an external structure of the body?
to give sperm easier access to the urethra
to allow easier blood flow
to manage sperm's temperature
to keep it separate from the rest of the body
DONE

Abiology teacher asks students to give examples of genetic variations that support the idea that changes in a population’s environment affect genetic variation. which is the least supportive example? a. changes in genetics in human populationsb. antibiotic resistance in bacteria populationsc. pesticide resistance in garden insectsd. changes in the color of the peppered moth population in england