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Bearing in mind that you will have no more than 30-45 minutes to write an essay, your answer will have to be concise and selective. Answers that score highly are those that directly address the question. ...

Genetic variation is important because it allows natural selection to act on the population. Individuals that inherit advantagous alleles are more likely to survive and successfully reproduce. Crossing ov...

-A phospate group  -A hexose sugar (deoxyribose) -A nitrogenous base (A, G, C or T)

The first thing to do is define aggregate demand and interest rates. The interest rate is the cost of borrowing and the benefit of saving—the extra money (expressed as a percentage) to be paid back on top...

In the economy it is often necessary to stimulate the economy when it is going through a slump or a fall in growth, likewise it may be required to keep growth under control as a country thrives under stab...