HELPP IMA GIVE YOU 20 PONTS PLI The mass extinction of the dinosaurs, approximately 65.5 million years ago, is inferred by most scientists to have been caused by

A)
a large energy surge from the surface of the Sun

B)
the occurrence of a major ice age

C)
an impact event occurring on Earth's surface

D)
earthquakes occurring along crustal plate boundaries

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?

Why do oceanic plates tend to subduction when colliding with a continental plate

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder