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MEDCs do not rely on produce from their own country to feed their population, and instead, import a lot of it from other countries. Therefore, in a drought they are still able to feed their population despit...

In order to work out the equation for a line, you need the gradient of the line and the coordinates of a point on the line. To find the gradient on the line, you look at two points on the line and calculate ...

To start, let us recall the form of a quadratic equation. y = ax 2 + bx + c. When making x the subject of the formula and setting y = 0, we get the quadratic formula, as you may have seen before. x = (-b +- ...

The answer is of the form ax 2 +bx+c The a term is found by the product of the coefficients of the x in the brackets. e.g ( 2 x+7)( -4 x+6) would give -8 x 2 . However for this example, we will only use coef...

There are four factors to consider. Tempearture Surface Area Concenration/ Pressure Catalyst These factors all influence the rate of reaction. It is also important to understand how these factor influence th...