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How are the lungs specialised for exchanging gases?

The lungs are made up of many air sacs called alveoli. The alveoli have many folds which create a large surface area. The larger the surface area, the greater the area of alveolar cell membrane available for...
LA
Answered by Laura A. • Biology tutor
3511 Views

How do you choose between using the imperfect and the perfect tenses?

In general, the main thing to remember with the perfect tense is that it is used with a completed action in the past. The imperfect tense can be used for several purposes: to describe a person's character or...
AM
Answered by Alison M. • French tutor
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What are deponent verbs and how do they work?

Deponent verbs are verbs which look passive, but have an active meaning. We are used to seeing active verbs, like ' capio ', meaning 'I take or capture', where the subject of the verb is doing the action the...
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Answered by Imogen S. • Latin tutor
5255 Views

Identify and briefly explain three criticisms that other sociologists make of modernisation theories of development. (AQA 'Global Development' A2 Paper)

A 9 mark question should be in three paragraphs . You will get one mark for each of the three criticisms identified. To gain the further six marks, you must give a satisfactory explanation as to why the mode...
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Answered by Lucy J. • Sociology tutor
2604 Views

How do you distinguish between the 'futur simple', and the 'futur proche'?

Although it may seem intimidating at first, as it's quite different in English, it is actually quite simple once you understand this. First of all, most native speakers alternate between the two tenses quite...
CF
Answered by Chris F. • French tutor
46219 Views