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What is the difference between vaccines and immunisation?

Immunisation is the process of becoming "immune" to a pathogen, in other words once you are exposed to the pathogen again you won't become ill (present with the symptoms). After your body is expose...
JW
Answered by Jake W. • Biology tutor
3656 Views

Why is benzene so stable?

Benzene (C 6 H 6 ) is a simple aromatic compound, which consists of a planar hexagonal ring of six carbon atoms, with each carbon being bonded to one hydrogen atom and two other carbon atoms. Carbon has four...
MB
Answered by Max B. • Chemistry tutor
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How should I analyse a primary source?

Primary sources offer you the chance to engage with a true piece of History - instead of taking a textbook's word, you can formulate your own opinion on the matter. Start by asking yourself what the source i...
TB
Answered by Tristan B. • History tutor
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How consistent was Russia's treatment of the peoples in its Empire throughout the period in 1855 to 1964? (25 mark A2 style question)

Students may be tempted to answer this question in chronological order or by country or ethnicity. Don’t! Always sort your points thematically, no matter how broad the question might seem. It is important to...
GM
Answered by Georgia M. • History tutor
6182 Views

Aidan, Emily and Seth shared some sweets in the ratio 2 : 7: 4 Seth got 16 more sweets than Aidan. Work out the total number of sweets they shared.

The difference in the ratio of Aidan's to Seth's sweets is 4-2=2 To find the scale factor to multiply up the ratio by, we divide the true difference in Aidan's and Seth's sweets by the difference in the rati...
EC
Answered by Eleni C. • Maths tutor
4877 Views