Overall cooling of earth's climate causes
a. the growth of glaciers
b. el niño
c. erosion
d. warm- and cold-temperature

This answer is D.

Explanation: There are temperatures all over the Earth, there are cold, warm and hot temperatures.

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !