Answer: Yes it is safe and effective. As long as it is FDA approved.
Explanation: CDC says "flu vaccine licensed by the Food and Drug Administration (FDA) that is appropriate for the recipient’s age and health status"
Answer:
No
Explanation:
A knife is not a biotic factor because a biotic factor is a living organism that shapes its enviroment.
Answer:
Answer A or B
Explanation: I say its a or b because if your in biology then this would mostly likely be your answer. Also when for one two daughter cells would usually go for sperm and egg cells but at the same time binary fission can be used for making for bacteria. If it were me i would choose B, but test your luck.
I think two are stem cell research and cloning
