Answer:
the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50 to 600 miles above the earth's surface.
Explanation:
Answer:
the answer is c) Test subjects may get bored and want to quit early.
Explanation:
True but remember to mark me brainiest please<span />
The fundamental unit of the organism, the cell contains various organelles with specialized functions and roles. The plasma or cell membrane separates the cell structure.
<h3>What is plasma or cell membrane?</h3>
Cell or the plasma membrane is the cell structure that is seen in the cells that separate the outer cell surroundings from the inner environment of the cell.
They allow the semipermeable passage and transportation of the substances in and out of the cell and are made up of lipid bilayer. It protects the cell from the invasion of bacteria and other microbes.
Therefore, option A. plasma or cell membrane separates the inner and the outer environment of the cell.
Learn more about cell membrane here:
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The study of heredity is not called fertilization so it is false
