Answer: Your heart has to pump blood so u can live
Explanation:
Answer: Your heart pumps blood so you can live.
Without blood, you wouldn't have any "life-force".
So you need your heart.
Answer:
a or d I'm not sure hope this helps
How we can calculate the concentration of oxygen in ppm in that chamber?): a) If we suppose that ppm are cm^3/m^3, we can calculate oxygen concentration as: V(O2)/V(total) = (209.5+x)cm^3/10^-3m^3.
Explanation: Got it from goggle
