In past centuries, many people believed in a static universe—one that had existed forever without changing much, and one that would continue forever more or less as it is today. which of the following facts supports the big bang theory and disproves the static model of the universe? a. most galaxies appear to be moving away from each other. b. stars are held together by gravity within galaxies. c. stars are constantly forming and dying. d. light moves at a constant speed through empty space.

The answer is A. Most galaxies appear to be moving away from each other. Scientists discovered this when looking through very expensive microscopes, and saw that the universe was always growing and expanding, as if exploding from one point and moving outward.

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.