The answer would be “D,” as gravity is the force that keep all objects on Earth’s surface.
It converts light energy which is abiotic, to glucose, which is consumed by organisms for energy. (It transfers to the appropriate type of energy for biotic organisms)
Answer:
The oxygen enters the bloodstream from the alveoli, tiny sacs in the lungs where gas exchange takes place (Figure below). The transfer of oxygen into the blood is through simple diffusion. ... While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries.
Explanation:
The medulla oblongata is a primary respiratory control center. It’s main function is to send signals to the muscle that controls respiration to cause breathing to occur. There are two regions in the medulla that control respiration the ventral respiratory group stimulates expiratory movement.
