B.
Special proteins are in charge of regulating the movement of substance through the double-membrane.
Answer:
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Explanation:
Aquatic plants require special adaptations for living submerged in water, or at the water's surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common.
<span>undergo a dramatic decline in size, possibly to a stable level at or below 1,800 individuals.</span>
