How would the exchange of molecules between an organism and its environment be affected if the membrane were less permeable? (3 points)
a) Fewer membrane proteins would be needed to carry out active transport of nutrients.
b) Molecules needed for growth would have more difficulty diffusing across the membrane.
c)Organisms would be more susceptible to harmful substances crossing the membrane.
d) The membrane would rearrange to form a single phospholipid layer to transport materials.

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the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.