Because diffusion is how chemicals travel in and out of the animal's cells. If diffusion didn't occur then the animal would die.
facilitated diffusion.
becuase you have to$#**^ yourself
Diffusion.
diffusion A+
By simple diffusion
diffusion
When breathing oxygen into the lungs, animals are using diffusion to distribute that oxygen to all cells in the organism. Carbon dioxide in turn is diffused from the bodies cells into the lungs to be breathed out. Plants also use diffusion to obtain carbon dioxide and excrete oxygen. Diffusion is used in photosynthesis and also when absorbing water and minerals from the soil and into the roots.
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They use diffusion to get air through there body walls.
Diffusion is the process of spreading something more widely. It can be the diffusion of Homo Sapiens from the plains of Africa, the diffusion of a drop of ink in a bucket of water, diffusion of the use of smart phones.
Diffusion is the process of spreading new ideas from culture to culture. Examples of diffusion include the use of cars and the smelting of iron. There are five main types of diffusion they are: Expansion diffusion, Relocation diffusion, Hierarchal diffusion, Congious diffusion and Stimulus diffusion.