4. Breathing is required for cellular respira- tion. Use the reactants, products, and stages of cel-
lular respiration to explain why breathing is required.

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

What are the seven economic and social goals?

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.