Why do organisms need space? *

a. Overcrowded areas lead to starvation and disease.
b. It gives time among organisms to take enough food.
c. It provides energy and nutrients necessary to the body to perform life functions.
d. It transports nutrients and wastes in the body, and helps keep body temperatures constant.

29. Air is needed by living organisms because ______ *

.a. Oxygen in the air is needed for the chemical process that releases energy from food
.b. The cooling effect of air provides comfortable condition among organisms.
c. The air is needed to digest the foods condition among organisms.
d. None of the above