Which best describes the fossil record? the fossil record cannot provide evidence of evolution. the fossil record provides evidence of a common ancestor to many species. the fossil record provides evidence that disputes the theory of evolution. the fossil record is inaccurate because scientists are not able to date fossils.

What type of competition exsist between two species. turtles and fish

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

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.