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Eutrophication occurs when mineral ions from the soil such as nitrates are leached (washed away by the rain) and they run into rivers, lakes and ponds. This increase in nutrients into the water causes an ...

Essentially that objects have a top speed falling through air to the ground, which is called terminal velocity. This is because we are surrounded by air, so when moving, objects have to push past the air ...

A downwards sloping demand curve in a supply and demand diagram for micro-economics sits on a X axis named quantity and Y axis named price. The demand curve is linear and slops downwards start from Q=0 an...

This is an example of a question that may appear in a calculator paper. In this question the area of the square and circle must be found individually, and the area of the circle subtracted from the area o...

Photosynthesis is the process that plants use to make their food. Photosynthesis takes part in the leaf of the cell in small structures called chloroplasts which contain chlorophyll. Reaction uses light, ...