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The surface area of the small intestine in a healthy person is really large! The reason for this is the villi covering the inside of the small intestine. We need all this surface area to absorb the nutrie...

Context is something that is easy to forget to include, but it is really important! Understanding the historical or social context of a piece of writing can give you a lot of clues about the writer's mess...

1. Rearrange y - 3x = 13y = 3x + 13 2. Substitute into x^2 +y^2 = 25x^2 + (3x + 13)^2 = 25 3. Expand bracketx^2 +(9x^2 + 39x +39x +169) = 25 4. Form quadratic equation 10x^2 + 78x + 144 = 0 (Dividing b...

Petrarchan and English sonnets are very similar forms but have a few easy to spot characteristics that let you differentiate between them. The Petrarchan sonnet is the earliest sonnet form and consists of...

In English, the perfect tense always requires the auxiliary verb "to have", but in French, you will need to use either avoir (= "to have") or "être" (= to be). Most verbs wil...