The Atmospheric Layer in Which Gases Do Not Maintain a Uniform

question 118

Multiple Choice

The atmospheric layer in which gases do not maintain a uniform composition is the ________.

• A) ionosphere
• B) homosphere
• C) troposphere
• D) heterosphere
• E) none of the above

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Definitions:

Urine

A liquid by-product of metabolism in humans and many animals, excreted by the kidneys through the process of urination.

Secretion

Separation of certain materials from the blood by the activity of a gland.

Excretion

The process of expelling material from the body.

Elimination

To remove, get rid of, exclude; also to pass urine from the bladder or stool from the bowel.