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Find dy/dx where y = (x²+7)^1/2
=> 1/2(x²+7)^-1/2 * d/dx(x²+7)  By the chain rule
=> 1/2(x²+7)^-1/2 * 2x
=>...

This question can be split up into 2 parts. What it is asking for firstly is an outline of what theory says should happen. As the question starts with the word comment, the second part will involve som...

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 ...

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...

Allopatric speciation:

New species appear when one interbreeding population is split into two reproductively isolated populations, which then evolve to become separate species. Thi...