If its to a child, I would say an egg cell.
But, any of these cells can mutate.
You did not put any choices, but ribosomes and the Rough endoplasmic reticulum (RER) are both responsible for protein production.
The answer is <span>2. Food moves down from leaves.</span>
True... both types of barometers do used vacuum pocket in order to take a measurement
Do you have a picture you could provide?