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A vaccine causes white blood cells to produce anitbodies. Antibodies are proteins which kill pathogens, such as viruses and bacteria. If the body is reinfected by the same pathogen as the vaccine then ...

First label all the sides with letters:longest side = amiddle length side = bshortest side = cNow convert the question into equation form: "the longest side is two units more than the shortest side&q...

Prices are: £40 per guest. Total cost reduced by 5% with over 60 guests. 

First, we work out the cost of Nisha's suggestion.

£40 x 70 guests = 2800

To find 5% ...

In Latin, the future participle literally means being about to X or on the point of doing X. It is active, and has the form:amaturus, amatura, amaturumThe best way of spotting the future...

The word αὐτος has three different meanings in Greek, depending on its case and the use of the definite article.1) When the word agrees with an article + noun but is not sandwiched...