What types of cells contract to move an animal? a)sperm cells b) bone cells c) muscle cells d) egg cells

According to the cladogram, which organisms have roundworms as a common ancestor?

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

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.