Answer:
Cells that do not divide once they have developed - Muscle cells Nerve cells
Cells that grow and divide throughout life - Skin cells Blood-producing cells Digestive tract cells
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The earth has a closed atmosphere. This means that no water can be added to it. That's why we have the water cycle
“Fat must be broken down into fatty acids before being
converted to glucose” prohibits lipids from being a readily available energy
source.
Lipids<span> are a
group of naturally occurring molecules that include fats, waxes, sterols,
fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides,
diglycerides, triglycerides, phospholipids, and others.</span>
The correct answer between all
the choices given is the first choice or letter A. I am hoping that this answer
has satisfied your query and it will be able to help you in your endeavor, and
if you would like, feel free to ask another question.
a. digestive and excretory systems.