How does predation differ from parasitism? predation happens between trophic levels, while parasitism happens within a trophic level. parasitism is beneficial to the host, whereas predation always harms the prey. parasites rarely kill their host, while predators kill their prey. parasites are only insects or mites, while predators can be any kind of large animal. parasites rarely kill their host, while predators kill their prey

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?

Physical characteristics of down syndrome

Which body region are part of the cephalic region?