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Describe how selective breeding could be used to improve the volume of milk produced by cows.

Calculating the milk yield of mother cows and their offspring can indicate which animals have good breeding genetics. Bulls also play an important role in generating a good milk yield, and their offsprings m...
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Answered by Saffron M. • Biology tutor
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Describe, with the use of an example, the process of natural selection in evolution.

An example could be the peppered moth which changed its colour in order to blend into the environment as it changed with the industrial revolution.Should explain that natural selection is where advantageous ...
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Answered by Rose B. • Biology tutor
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How do I answer a source question?

Source questions in a history exam may seem complicated, but once you understand the method by which to analyse them, the technique is exactly the same, regardless of the time period being studied. The key t...
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Answered by Hannah O. • History tutor
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When working with probabilities why is it sometimes necessary to add and sometimes to multiply?

Whether you need to add or multiply depends on whether it is a case of 'AND' or 'OR'. For 'AND' you multiply, and for 'OR' you add. Below are examples of each case, using dice as an example: To calculate the...
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Answered by Marcus W. • Maths tutor
3411 Views

When do you agree the past participle?

With verbs such as 'aller' and 'venir', the auxiliary verb is être and the past participle needs to agree with the subject.e.g. Il est allé à Paris. Elle est allé e à Bruxelles.With most verbs the auxiliary ...
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Answered by Oliver B. • French tutor
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