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Question = Simplify a 4 x a 5 -------------------------------------------So here we have two 'groups' of a being multiplied together. We can rewrite a 4 and a 5 as the following:a 4 = a x a x a x aa 5 = a x ...

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 inc...

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 par...

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 of t...

The key difference between these two processes is that diffusion is the movement of particles from a region of high concentration to a region of low concentration, whereas in active transport the molecules m...