Answer: C. factors responsible for formation of mutation in the cell.
Explanation: A mutagen is a chemical or physical phenomenon, such as ionizing radiation, that promotes errors in DNA replication.
Old landmarks ,rivers ,paths , old trading area’s , villages
Answer:
d) the group that is subjected to the change that the independent variable represents.
Explanation:
Experimental group: The experimental group is also referred to as a treatment group because this is the group that receives treatment in a given experiment. Here, the group refers to test subjects like animals, people, plants, etc. In the experimental group, the independent variable is being changed.
In an experimental research study, the group which is an experimental group is the group that is subjected to the change that the independent variable represents.
Answer:
A. The US population increased slightly during that time
Explanation:
1- Great Depression- wheat or rice
2- Colonial period- indigo
3- Reconstruction Era- Tobacco
4- Silk- <span>Post-World War II
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Take these answers with a grain of salt. I am doing my best. But it has been a little while since I took that class.
