Which of these best describes how snow leads to runoff in a watershed? A. Snow falls and is buried by dirt
B. Snow melts and the water flows into streams and rivers
C. Snow clogs up streams and rivers
D. Snow evaporates and forms clouds

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?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels