A:
The answer is Power source
<span>Frog lungs are poorly developed because they don't use them that much. Their skin is moist and very thin because it takes part in their respiration because their lungs are underdeveloped. Skin has pores and breathes as well but in humans it's not very much used because we have good lungs, but frogs' skins are very important for them because they couldn't get oxygen without it.</span>
Answer: Erosion
Explanation: This is because the process of moving sediment after they have formed would be considered the destructive process of erosion. Erosion is the act of moving sediments before they are formed or during, and weathering is similar to erosion but doesn't neccesarily have to do with Gravity because it focuses on the elements rather than the physics of mother nature.
Answer:
Full or New Moon + Perigee
