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Describe how environmental factors affect the growth of roots and shoots in plants. (6 marks)

Plants are able to respond to the environment in multiple ways. Shoots grow upwards, towards light, in a process called phototropism. Roots, on the other hand, grow downwards into the earth towards moisture ...
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Answered by Holly L. • Biology tutor
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How can I improve my exam technique?

A common problem amongst Biology students is the difficulty in knowing the content well, but not being able to translate this knowledge into marks when it comes to the exam. Your exam technique is vitally im...
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Answered by Lucy D. • Biology tutor
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Derive Keplers 3rd law

Equate gravitational force (GMm/r^2) to centripetal force (mv^2/r). Rearrange to get v^2=GM/r. Due to the approximated circular orbit v=2pir/T so v^2=4pi^2r^2/T^2. Therefore GM/r=4pi^2r^2/T^2. Rearranging gi...
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Answered by Michael S. • Physics tutor
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What makes good analysis?

In your essay answers, your analysis should work at two levels. Firstly you should be 'zooming in' to analyse the text at an individual word level. Look for individual word choices and consider why the text ...
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How can I ensure I have a strong argument running through my answer?

Examiners look for your essay to have a clear running argument throughout, and every point you make should be contributing obviously to your line of argument. Use your introduction to set up your argument. L...
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