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Explain how an increase in greenhouse gases can result in climate change?

Greenhouse gases include methane and carbon dioxide. These gases enhance the greenhouse effect which consequently warm up our planet. The sun's energy arrives as short wave radiation, this type of radiation ...
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Answered by Tabitha H. • Geography tutor
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How is the electronic structure of sodium different to chlorine?

(Draw the two out) Chlorine has 7 electrons in its outer shell while sodium has only one.
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Answered by Tabitha H. • Chemistry tutor
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Only a small percentage of the sun's energy captured by plants is incorporated into body tissues of carnivores. What happens to the rest of this energy?

In a food chain, very little energy is passed onto the next trophic level - this is because living creatures create waste. Energy passes out of the food chain in a number of ways, including; - energy used fo...
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Answered by Tabitha H. • Biology tutor
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Find the value of: d/dx(x^2*sin(x))

Use the product rule: d/dx(fg) = f' g + f g' f = x 2 f' = 2x g = sin(x) g' = cos(x) answer = 2xsin(x) + x 2 cos(x)
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Answered by Will R. • Maths tutor
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Explain how cache memory can improve system performance.

Cache is a small amount of memory which is part of the CPU which is physically closer to the CPU than RAM is. The more cache there is, the more data can be stored closer to the CPU. Cache memory is beneficia...
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Answered by Ariane H. • Computing tutor
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