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Over-watering a plant can result in the soil around a plant's roots becoming saturated with water, reducing the amount of oxygen available to the roots. Using your knowledge of aerobic and anaerobic respiration, explain how over-watering can kill a plant.

When there is less oxygen available in the soil for uptake by plant roots, the root cells will be forced to increase their usage of anaerobic respiration over aerobic respiration. Anaerobic respiration produ...
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Given that f(x)= (4/x) - 3x + 2 find i) f'(x) and ii) f''(1/2)

This question is asking us to find the first order derivative of f(x) with respect to x, then the second order derivative when x=1/2i) Firstly, let's consider (d/dx)4/x:There are two ways to think about diff...
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Answered by Verity B. • Maths tutor
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What is the difference between the political systems in the United Kingdom and the United States?

The fundamental difference between the political systems in the UK and the US, is that the UK has a Parliamentary Monarchy and the US is a Federal Republic, which changes how the systems work and who they ar...
Answered by • Politics tutor
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What structure should I use for my paragraphs in an English Literature A-Level essay question?

This is one of the most common questions received at A-Level, and it is one of the questions which best highlights the jump from GCSE to A-Level. My understanding of the requirements of the A-Level paper all...
Answered by • English Literature tutor
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Differentiate x^x

With the methods we know at A Level we cannot current differentiate x x in its current form. Therefore let y = x x To turn it into a form we can differentiate we take the natural log of both sides. This give...
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