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Aerobic respiration requires oxygen from the air, whereas anaerobic respiration does not. Aerobic produces Carbon dioxide and water, and the carbon dioxide exits through a gas exchange system in humans. A...

They will be looking for a very good knowledge of the a level course and the ability to take a-level concepts a bit further. A good way to test this is to use the Cambridge lower sixth chemistry challenge...

Judicial decisions influencing British politics has, if anything, been thrust into the awareness of the public recently. One must only think of the increased importance of Human Rights in English law unde...

As we are considering a quadratic equation, we are looking for two values of x that make the equation equal to 0. To factorise, first look to the constant term (the term without any x) to find 2 numbers t...

Sulfur has the electronic structure [Ne]3s2 3p4. This means there are 2 electrons in the same p orbital. These repel each other making it easier to remove the electron causing the ionisation energy to be ...