A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus? the external stimulus of fear
the internal stimulus of fear
the external stimulus of hunger
the internal stimulus of hunger

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Which enzymes break down carbohydrates?

Isolated volcanic peaks on the ocean floor are