What are examples of molecules (related to breathing that move by simple diffusion right through the membrane)

from higher concentration outside the cell into the cell; whereas
moves from higher concentration inside the cell to outside to be exhaled by our lungs.

15 !
you to anyone who : d

Which of the following systems in absorbing oxygen and releases carbon dioxide

Why is it important that fibrin is insoluble in water?

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat