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Sometimes microorganisms are able to make it past the body's external defences (i.e. the skin) the body's immune system must defend the body. White blood cells are really important in the immune response. Th...

Homeostasis, the regulation of stable body conditions, includes control of body temperature. We function efficiently at 37 degrees celsius, as our proteins and enzymes work best at this temperature. We can s...

Hard engineering manages coastal zones in order to protect high-value areas from flooding or falling into the sea through erosion. These structures are usually high-cost and short-term. Examples include a se...

The important thing in this question is the letters. We want to group "like terms" together. This is what makes the expression simpler. I go about this by drawing a different shape around each lett...

Presentational features refer to the way a text is set out on a page, which can include for example the use of images and colour, logos, slogans, shapes, font style and size etc. You need to demonstrate to t...