Chromosome is to cactus as gene is to needle.
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.
I am thinking D. But I am not sure that it is the answer.
You improve your Your Muscular Indurance.
Hope this helps