Faunal succession and fossil correlation relate to the principle of superposition because there are fossils of certain organisms in a rock layer. By knowing the order in which
the organisms came and that fossils of the same age mean the rock layers are the
same age, scientists can determine the age of the rock layers with the youngest layers
on top.
True
False

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 prefix mean under less or below

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?