Answer:
The gravitational attraction between the sun and Earth
Explanation:
because of the gravity.
Cristae are folds of the inner mitochondrial membrane. It takes place on the membrane as a part of the cellular respiration to create ATP.
So B, Cristae is your answer. <span />
The biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes. The biceps is the flexor, and the triceps is the extensor of your elbow joint.
Both food chains and food webs contain plants and animals so it is not A.
Food chains separate by trophic level not food webs so it is not B
***Food chains show energy flow by each trophic level and food webs do not therefore it is C***
