Answer:all the things that you keep the same in the experiment
Explanation:
A quick Google search revealed that Andrew Johnson was the 17th president of the United States.
Answer:
The answer is option D. The retina is interrupted by the optic nerve.
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Probably the U.S. Environmental Protection Agency also known
as the EPA. They are charged with
protecting people and the environment by enforcing regulations that prevent
pollution. If they find any violation
committed they can impose sanctions and fines as well as imprisonment depending
on the nature of the offense.