Search over 10,000 free study notes

There are two steps to solving this problem. First, we want to find out how much the increase itself is, so we want to calculate 4% of £23. Then, we want to add the result to the £23. That will give us the f...

Natural selection is when certain characteristic are 'selected' for. Each species have simiar characteristics but differences in genes means that their characteristics can vary for example individual birds o...

The first ionisation energy is defined as, the amount of energy required to remove 1 mole of electrons from 1 mole of gaseous atoms to produce 1 mole of gaseous ions , with a single positive charge. (By dete...

The introduction is a vital part of your writing, particularly considering it is the first impression the examiner will get of your essay. Firstly, it is important to state what you will be arguing for/discu...

Muscle contraction can be explained using the 'Sliding Filament Hypothesis'. Following nervous stimulation, a nerve impulse will be transmitted to a neuromuscular junction. This will cause a release of the n...