One organ is the <u>heart</u>. <span>The blood gives your body with the oxygen and nutrients (that flow though it) it needs. </span>
<em>Hope to help</em>
<em>:D</em>
The cell membrane surrounds the ameba, which is a thin layer of protein and fat.
The PH will decrease because you are adding more acid to the mixture. The more acidic a mixture, the lower it will be on the PH scale.
Ïf is your answer your welcome