D) It can only be used in areas with specific kinds of rivers.
Answer:
The correct answer is option B. exocytosis.
Explanation:
Exocytosis is a process that helps in transport secretory products to the plasma membrane through the cytoplasm in a cell. In this process, the materials are transported out of the cell with the help of vesicles.
Some of the examples of the exocytosis are the secretion of the enzymes, proteins, peptide hormones and antibodies from the cell linings of the stomach that help in the digestive process.
Thus, the correct answer is option B. exocytosis.
Answer:
C. A concentration gradient must exist.
I believe the answer is that the CFCs cause low ozone concentrations in the atmosphere.
Sorry if I'm wrong, hope this helps.
