Answer:
aging is a gradual, continuous process of natural change that begins in early adulthood. during early middle age, many bodily functions begin to gradually decline. people do not become old or elderly at any specific age. traditionally, age 65 has been designated as the beginning of old age.
Explanation:
"Bypass valves are important in any system through which water or oil is pumped to maintain an even pressure and keep the system operating" I researched your question and this came up hope it helps
Answer:
Explanation:
It is sometimes used in medicine to examine body fluids. The chemicals of interest (ones that should not be in the body) will separate out differently than the fluids that should be there.