Which layer will become saturated first when rain falls?

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 of the following is an oxidation-reduction reaction? (pictured below)

Solutions to environmental problems in europe must