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Hydrogen bonds between water molecules give water a ‘stick’ like property called cohesion. This means molecules of water are attracted to each other. Hydrogen bonds also form between water molecules and t...

Well, the easiest way to remember this is...For almost all non-reflexive verbs, you will use 'avoir' rather than être. There are however, some exceptions. A particularly useful way of remembering which on...

*continued;how would you design the neurones leading from the ears to the audio processing centre to ensure that the stimuli will reach it at the same time?We need to start by establishing that the signal...

Notice that the inequality may be rearranged to give the quadratic x^2 + 8x - 9 < 0.Factorise the quadratic to give (x-1)(x+9) < 0.Treating the expression as an equality, recall that if the product ...

This question can represented in algebraic form:
ABC Taxis = 0.8x + 5XYZ Taxis = 1.2x + 3
Noting that the units must be consistent throughout the question, so we have changed the pence into mile...