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What is the difference between primary and secondary succession?

Primary succession starts from bare rock , so no soil is present at the start. Over time the pioneer organisms (such as moss and lichen) break the rock and as the organisms die and decompose, the soil builds...
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Answered by Sarah P. • Biology tutor
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How is the DNA prepared for it to be replicated?

The preparation occurs to the DNA whilst in the nucleus of the cell. As DNA is a double helix, the two strands of DNA need to be split apart. Therefore the hydrogen bonds need to be broken. The DNA helicase ...
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Answered by Sarah P. • Biology tutor
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What is the difference between aerobic respiration and anaerobic respiration?

Respiration is the process by which the body creates energy by breaking down nutrients. This can either happen in the presence of oxygen, or without it. The key difference between the two processes are that ...
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Answered by Alex W. • Biology tutor
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Explain what factors will influence a business' choice of supplier

Cost: The lower the cost to the business the cheaper each unit will be and this helps the business to increase their profit. However the drawback to this is that quality can be neglected as a result. Quality...
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Which medical school should I apply to?

Deciding on where to apply is really important; hopefully you are going to be there for at least five years! When trying to decide there are a few important things to look for. However, it is also worth noti...
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