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Fibrosis is the formation of scar tissue due to injury of the alveolar walls (small sacs at the end of bronchioles that are responsible for gaseous exchange), from smoking or other small particles. Due to...

When writing an introduction it is a good idea to stick to a clear three-part structure. Let's take the following example of an essay question: How did the role of women in Britain change during World War...

First factorise the equation : you need to find two value which multiply to give (4 x -6) = -24 and add to equal -5,these two numbers are -8 and 3. Then write the equation as follows:4x² - 8x...

This question tests the student's knowledge of the use of singular and plural pronouns, as well as the subjunctive. La gente (the people) is singular, so should be followed by a singular verb, as...

Protein.Catalyst.Not used up in the process.An enzyme is a protein which acts as a catalyst to speeds up a reaction but is not used up in the process.