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Describe how negative feedback is used to control blood glucose concentration

Blood glucose concentration levels fluctuates depending on what has been eaten and how much activity has been done. alpha and beta (B) cells in the pancreas detect change in the blood glucose concentration. ...
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Answered by Catherine W. • Biology tutor
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The boiling point of the halogen elements increase down the group from chlorine to bromine to iodine. Please explain this trend for 3 marks.

The number of electrons in the halogen atom increases as you move down the group (1st mark achieved here), causing stronger London forces to arise between the molecules of said halogen (2nd mark achieved her...
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Answered by Aaron L. • Chemistry tutor
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How can I write a non-fiction text in the appropriate form?

In English Language you may be asked to submit pieces of writing, often non-fiction, which you must write yourself. Often many people are worried about how creative they might have to be, but if you follow s...
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Describe Augustine's Theodicy for why there is evil in the world.

Augustine's theodicy argues that God created the world and it was perfect, without the existence of evil or suffering. Augustine defined evil as the privation of goodness, just as blindness is a privation of...
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What is elasticity and why does it matter to economists?

Elasticity is, in general terms, the amount supply or demand will react to a change in another variable such as income or price. It is very important to economists as it will allow them to estimate economic ...
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Answered by Aodhan B. • Economics tutor
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