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A public good is a good that is non excludable and non rivalrous. Non excludable means that anyone can use it; the benefits are not limited to just those who paid for it. Non-Rivalrous means that consumpt...

Gene = the portion of DNA coding for a particular proteinAllele = one of the alternative forms of a gene

In order to differentiate a number, 2 steps are needed to be made. The first is to reduce the power of the number by 1 and then multiply that value to the first number. I will run you through the given qu...

If we first factorise the top and the bottom of the equation we can see that the top is equal to (x+6)(x+3) and the bottom is (x-3)(x+3). This means we can divide the top and bottom by (x+3) giving us a r...

(draw diagram on whiteboard) As the potential difference increases, the current increases, since V=IR (where V is the potential difference, I is the current and R is the resistance). Initially the current...