Describe two biologically important features of diffusion

Diffusion is the process in which movement of molecules take place from their higher concentration to their lower concentration. It is an important biological process in any living organism. Two of these are:
1. It allows the exchange of molecules within the organism and with the environment. For example: gaseous exchange in the alveoli of the lungs.
2. It also regulates water content in the body.

Ithink sanforcisco california (i am not 100% sure) if you feel the opposite so that lol