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Evaluate sexual selection theory as an explanation of human relationships

There is supporting evidence for the role of sexual selection as a result of anisogamy. Buss et al (1989) carried out a survey of 10,000 adults in 33 countries . He asked questions relating to a variety of a...
CW
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Describe the characteristics of a destructive wave

Destructive waves have a weak swash and a strong backwash, thus material is removed from the beach. They are strong waves created when the wind is strong and has been blowing for a long time or in stormy con...
CW
Answered by Charlie W. • Geography tutor
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What is the difference between haemodialysis and peritoneal dialysis?

Both are forms of treatment for kidney failure so the blood is left unfiltered as this is one of the main functions of the kidneys. In haemodialysis all of the blood is filtered and it is done externally thr...
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Answered by Vaibhi D. • Biology tutor
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How do you answer a questions on how a buffer solution works?

This question would be a 5/6 mark question- marks are displayed throughout You always start by defining what a buffer solution is: A buffer solution is a system that minimises a change in pH on the addition ...
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Answered by Alice R. • Chemistry tutor
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What is a monopoly?

By technical definition a monopoly is a firm which holds 100% of a market, however in the UK the competition authorities define a legal Monopoly as a firm holding over 25% power within a market. Monopolies a...
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Answered by Meerav S. • Economics tutor
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