The correct answer is B. pollution.
Answer:
If phospholipid bilayer diffusion is normally negligible, there will be tissues (largely lacking in transporters that may be expressed elsewhere) which, despite the relative functional similarity of their phospholipids, are very poor at taking up drugs: the blood–brain [33], blood–testis [34], and blood–retina
Explanation:
<span>A gradual increase in atmospheric carbon dioxide would warm earths atmosphere becuse carbon dioxide is <em>a greenhouse gas</em></span>
The most common elements present in organic compounds are carbon, hydrogen, oxygen, and nitrogen.
Answer:
Passive transport must occur to maintain homeostasis. Active transport must occur to get the needed nutrients in and out of the cell.
Explanation:
