The of the eye is responsible for keeping objects in focus by changing its shape. a. pupil b. retina c. lens d. rods

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

What was photo 51 with rosalind franklin?

Name the part of the the brain labeled "e".