Describe cell differentiation​

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Wich level of organization includes all the other levels or organizations

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