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How can I get top marks on a long 8/9 mark question?

These questions are designed to test your ability to describe/explain/compare in detail. Good answers are able to describe or explain generic terms well, but excellent answers will do this with help of a exa...
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Answered by Bethany R. • Geography tutor
3253 Views

What are some good revision strategies?

Everyone has their own ways of remembering things, but there are some good general points that might help you out. If you just read over things, you might find that you can’t remember much at the end of a se...
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Answered by Gyda F. • Biology tutor
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How do new species evolve?

Allopatric speciation: New species appear when one interbreeding population is split into two reproductively isolated populations, which then evolve to become separate species. This mostly happens when popul...
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Answered by Gyda F. • Biology tutor
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What is the difference between a composite (cone) volcano and a shield volcano?

Composite cone volcanoes are made out of alternate layers of magma and ash deposits whereas shiled volcanoes consist mainly of magma deposits only. composite cone volcanoes are also steeper sided whereas shi...
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Answered by Bethany R. • Geography tutor
6284 Views

What is the gradient of the function f(x) = 2x^2 + 3x - 7 at the point where x = -2?

To work out the gradient of a function f(x), we need to differentiate it with respect to x, to give us f'(x). If x = a at a point, then the gradient of f(x) at that point is f'(a) (substitute a in place of x...
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Answered by Jake J. • Maths tutor
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