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A pathogen is a harmful organism that causes infectious diseases. There are many types of pathogens: bacteria, fungi, viruses, protoctists, worms and insects. They allow diseases to be transmitted from pe...

In differentiation, your goal is to reduce the power of the terms that you're differentiating with respect to (in this case, x).The method for doing this is:Multiply the power of your x term by its coeffi...

The biological approach takes a deterministic stance, explaining all human behaviour as controlled by some component of the person's physiology, such as genetics or neurotransmitters. It is therefore cons...

First we need to factorise the numerator into two expressions. We can see one expression must start (3x + ?) and the other therefore must hold (x + ?), we know this because the two bracke...

The two main aptitudes tested by the A level film essay (for most boards you will have the option to write an essay either about a French film or a French language text) is your understanding of the film ...