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Anaerobic respiration occurs when there is no oxygen available and so produces an oxygen debt. This debt is equivalent to the total amount of oxygen required to oxidise the lactic acid formed from this proce...

Leaching is the process by which nitrates and other organic molecules can reach lakes from fields. This may be due to a large amount of fertiliser being applied or heavy rain causing the fertiliser to wash i...

When deciding where to take a phrase, look at the final 3 or 4 notes of the phrase. This will give you an indication of the chord you will use as a pivot chord.Pivot chords are essential for modulating throu...

Respiration refers to the process of converting food substances such as glucose into energy which the cell can use. There are two types of respiration - aerobic and anaerobic respiration. Both these processe...

Written work in a foreign language may seem slightly daunting at GCSE level, but there are many ways in which you can improve the sophistication of your written work with just a few simple tips! 1) Try and i...