Need help ASAP
what is An element

What is used to keep track of the gamates and possible offsprings combination

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

Which of th following is needed for cellular respiration to occur