In any food web organisms are responsible for converting raw energy into usable chemical energy are collectively called while organisms that recycle the nutrients trapped in dead organisms are collectively called a) producers ; consumers b) producers ; decomposers c) heterotrophs ; consumers d) heterotrophs ; autotrophs

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.