Answer: Structural changes can occur during the formation of egg or sperm cells, in early fetal development, or in any cell after birth. Pieces of DNA can be rearranged within one chromosome or transferred between two or more chromosomes.
C. No one knew germs existed
Therefore diseases spread because they did not know how to prevent them and they did not have good hygiene.
Answer: (D)West Virginia, Ohio and New Hampshire have been hardest hit by the problem of deadly drug abuse.
Explanation:
The paragraph above simply explains that West Virginia, Ohio and New Hampshire have been hardest hit by the problem of deadly drug abuse.
This was depicted in the text above as the three states were mentioned to be the states that have seen the most deaths with regards to drug cases.
I’m pretty sure it’s A I don’t know if it right or not but hope this helped
