Which of the structures are found in a photosynthetic 1- cell surface membrane
2- cellulose wall
3- ribosomes
4- chloroplasts

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 field of science did harry hess study?

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above