Answer:
ummmmmm i think ..i.. its the right answer
Explanation:
A protostar forms once the nebular cloud condenses and the core begins to heat. To heat is the answer hope this helps you!!
The answer is mitochondria.
Recall that a period is horizontal, and a group is vertical.
So if cobalt is moving "down" a period, it would be most logical to say that it would be Ni, or nickel. It could also be Copper, Zinc, Gallium, and so on. Make sense?
Answer:
due to the rate of blood circulation
