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Heat is produced through the radioactive decay of elements in the inner core. This heats the lower mantle, causing the magma to become less dense and rise. Once it reaches the upper mantle it cools, becom...

DNA is a polymer due to the fact it contains multiple repeating units (monomers). These monomers are known as nucleotides. Multiple nucleotides join together by phosphodiester bonds to form the polymer th...

An oligopoly is a market which is dominated by a small number of firms. With a small number of firms in the market there is less competition between firms and therefore prices are unlikely to be best for ...

Being able to identify techniques is great, but always remember that your focus needs to be on the meaning behind them. Shakespeare did not simply decide to use a metaphor, for example. You'll pick up mar...

Better health care so people are living longerNew medicines are being developed so people don't die of previously fatal diseases Farmers are able to produce more food using new breeds and equipmentCultura...