Suppose a population of flightless beetles becomes divided into two separate populations by the development of a city. the two populations will most likely become separate species if the two populations are —

relatively small
unable to interbreed
able to produce many offspring
made of different colored beetles

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.