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An enzyme is a type of protein which we call a biological catalyst. In biology, a catalyst is a chemical which helps speed up reactions without being used up itself. Therefore, if you add 2ml of an enzyme...

We can begin by working out the total number of children in the cinema. We know that for every 2 girls, there are 7 boys, which is the same as saying for every 1 girl, there are 3.5 boys. Three and a half...

Break it down into different strands to show nuance:
liberal - Sharpe, WilkinsonRadical - Greer, FirestoneMarxist - Ansley, BenstonPost modern - Staceyetc.

Outline a weakness - it relies on animal studies
Give evidence - Pavlov, Skinner
Explain - this makes it difficult to generalise to humans, lacks ecological validity
Link back - this makes ...

Balancing equations is making sure that all atoms, ions and charges have the same count on both sides of the equation. We start with checking metals, hydrogen and lastly oxygen and charges. In order to ba...