Help please I need help on this

In a certain ecosystem owls are predators for mice. the owl population increases and they eat more mice this causes the mouse population to decrease what happens next? a.the birth of mice increases. b. the birth rate of owls increases c. the population of owls decreases d. the population of mice increases

Which measure of an earthquake depends on how close you are to the focus?

Climate like that in the sahara desert have the fastest rates of weathering