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Sovereignty is a concept that can be traced to the 1648 Peace of Westphalia, which put an end to the 100 year-religious European wars. The concept was designed to allow each nation in Europe to declare th...

The general format for an equation of this type is ax²+bx+c Firstly you should factor the equation. Since in the example given a=1 you know that there will be a single x term in each factor. So...

Asexual reproduction occurs when the offspring comes from a single parent. This results in offspring with the same genetic composition as the parent. Sexual reproduction occurs when a male gamete and a fe...

'Rationalise the denominator' means that we need to express the fraction in a way which does not have a surd on the bottom. A surd is a way of expressing an irrational number. For example √4 = 2 which is ...

The alveoli in the lungs have a high surface area to volume ratio that provide a higher rate of diffusion. They have very thin walls which are one cell thick that allow fast gaseous exchange between the a...