A:
q:
some molecules are too big to pass through the phospholipid bilayer of the cell membrane. these molecules need to pass
through
that are embedded in the cell membrane,
a)
proteins
ribosome
cell wall
d)
carbohydrates
i think the answer is cell wall

answer; /// i believe that the correct answer is; ///a combination of the birth and death

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

the answer for this question would be d. glaciers

it would lead to upper respiratory infections and pneumonia.