If the atmosphere was 100% Oxygen, this could cause even the slightest spark of a flame, this could cause the world to turn into a ball of flames. Oxygen is extremely flammable, meaning that everything could set on fire.
other then the lungs no all of the body parts get oxygen from blood cells
I beleive that the plasma membrane is B. Semi permeable
Oxygen and carbon dioxide. ☺♥
C preserved bone because none of the others were enough
