Decide whether the following characteristics describe blending or particulate concepts of inheritance and classify each accordingly

What causes darkening of the skin as melanin production increases

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.

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous