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A concentration gradient occurs when you have a solute, like salt, dissolved in a solution, like water. Most of the time there won't be the same amount of salt through out all of the water - there will be mo...

Diffusion is described as the movement of molecules from a high concentration to a low concentration, through a concentration gradient until evenly spread out

The four chambers include the right and left atrium and the right and left ventricle

Osmosis can be described as the movement of water from a high concentrated area to a low concentrated area, through a selectively permeable membrane

The five stages of mitosis include, Interphase, Prophase, Metaphase, Anaphase and Telephase