Answer:
Explanation:
A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. Once the fusion reactions begin, they exert an outward pressure.
As long as the inward force of gravity and the outward force generated by the fusion reactions are equal, the star remains stable.
The Endosymbiotic theory was found in the Mitochondria as well as the Cloroplasts.
It should be 2, but I'm not exactly sure
Answer:
The correct answer is A) Respiratory System
Explanation:
The Respiratory System has is concerned with the lungs, the process of breathing, etc. The lung is also one of the main organs in the Respiratory System. If your lungs are filled with fluid or infected, your body will have issues getting the air it needs.