To make changes to it or to take out some genes of interest
Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Answer:
ans is c is correct pls mark me as brainlist pls
An eon is 1.05 billion years and an era is 350 million years
Answer:
The average abortion occurs at the beginning of fetal period
Explanation:
no explanation
