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How does a reflex arc work?

A reflex arc is a system of sensory, motor and relay neurones that work together to provide a quick reaction to stimulus that protects us from danger. A really good example that often comes up in textbooks a...
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Answered by Abraham W. • Biology tutor
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What physical processes result in the formation of a meander?

A meander is a bend in a flowing body of water. The physical processes which form menders are erosion and deposition. Erosion occurs mainly on the outside bend as the water is faster, deeper and has a greate...
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Answered by Davina D. • Geography tutor
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Solve the two simultaneous equations y+5x=30 and 6y=-x+64

The easiest way to solve these equations is by substitution. Rearrange the 6y=-x+64 equation into the form of x=64-6y. Replace x in the other equation with x=64-6y to produce y+5(64-6y)=30. Multiply out the ...
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Answered by Harriet W. • Maths tutor
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What are some disadvantages of using GDP as a measure of living standards?

GDP does not include the hidden economy. This includes illegal activities such as the drug trade, which constitutes a significant proportion of total output in some countries. 2) Living standards is a broade...
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Answered by Suchir K. • Economics tutor
7043 Views

How should I analyse a primary source?

Primary source questions in exam papers are asking you to give your own interpretation on history itself, rather than just reciting knowledge from a textbook. Contextual knowledge is always very important, b...
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Answered by Kathryn D. • History tutor
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