Which condition is a cause of impotency in men? undescended testicles that persist beyond puberty the inability of the penis to become erect a vasectomy, which is a surgical procedure to cut the vas deferens a low production of sperm in the testes the absence of the vas deferens in a male from birth

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

Are the earth's ocean floor and continents the same age geologically? why or why not?

How far away is the nearest black hole from earth?