explain why there are no giant cells. Use the terms diffusion, cell membrane and cell volume in your answer.

overly large cells have a lower surface area:volume ratio. a large surface area is needed to obtain nutrients, dispose of substances, and for diffusion to occur. A giant cell would not be able to accomplish these tasks effeciently enough, and would eventually die

answer; both surfaces of the membrane are nonpermeable

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.