The cycling of carbon between the living and non-living parts of the Earth system is an important result of which of the following processes?

A: Plants and animals exchanging gases with the atmosphere

B: Condensation of water vapor leading to cloud formation

C: Herbivores digesting plant materials to get nutrients

D: Methane entering the atmosphere from volcanic activity

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

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.

How secretion and excretion both are different? explain in simple language.