Answer:
I believe it is D
Explanation:
A B C are all symptoms that point towards a concussion but D is not
DNA helps scientists to better classify organisms is because each organ has a specific kind of DNA. For an example, brains and hearts have many small types of RNA. So if a scientists see some RNA they know that its a heart or a brain.
No she will not get her period because although it is possible for the person to see bleeding through pregnancy this will not be due to their menstrual cycle hope this helps
b. to include all required nutrients
It should be decreas i think not complely sure.
