Explain at least two positive effects of the cell cycle on the human body. use complete sentences.

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

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d.higher