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Oceanic crust is thinner and more dense than continental crust. This is because it has been compressed by the weight of the oceans it carries above it. It is also much younger than Continental crust, a...

To find the midpoint between two points, first we must find the mid point between the x coordiates and then the y coordinates.

The x coordiate of A is 8 and the x coordia...

Alleles are different forms of a gene. For exanple if the gene is eye colour, the alleles would be the different colours (green, blue, brown) For every gene that you have, you get two alleles, one from...

Cancer: what is it?

A cancer happens when cells begin to divide out of control.

Benign tumours are growths of abnormal cells which are contained in one area, usually within ...

Initially drawing a diagram of the two lines helps to establish whether values should be positive or negative and gives a rough approximation of where the answer may be:

By...