What are two purposes of the cell cycle

How is an environment able to support different varieties of organisms?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2