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Diffusion is the movement of a substance from an area of high concentration to an area of low.For example, imagine spraying a deodorant can. The substance coming out of the can is at high concentration an...

Diffusion is the main mechanism for absorption within the small intestine, so effective diffusion is the key to sufficient nutrient absorption. The small intestine has a very large surface area, created b...

Gaseous exchange in humans takes place in the alveoli in the lungs, the aim is to remove carbon dioxide from the lungs and increase oxygen content of the blood.Increased surface area of the exchange surfa...

The impact of interest rates is trifold. Firstly, interest rates affect the cost of borrowing and the return on savings. An increase in interest rates is likely to make borrowing more expensive, as now a ...

The system I have always used to help make sure that you stay relevant to the question, as well as picking up as many points for discourse markers is as follows:
P - Make your Point, give an introduc...