Describe the process of diffusion. How does diffusion help cells survive?

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.

Diffusion happens in liquids and gases because their particles move randomly from place to place.

Diffusion is an important process for living things; it is how substances move in and out of cells.

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

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