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When an action potential arrives at the end of a presynaptic neurone, it causes the uptake of calcium ions through ion channels in the wall of the synapse. This influx of calcium ions causes vessicles of ...

The Passé simple expresses an action that happened and ended in the past. This action has not impact on the present. It is mainly used to state a succession of actions that happened in the past : "il...

When thinking about making a fraction out of two numbers you need to find a common denominator. With this example to be able to compare 180g and 3kg you need to find the common denominator between the two...

(Draw hydraulic jack diagram using Pen tool) Firstly, we need the quation for pressure. Pressure is measured in Nm^2 which tells us that P=F/A. Where P is the pressure, F is the force in Newtons and A is ...

A vector is a measurement of something that has more than 1 number associated with it, for example velocity. I can tell you how fast a car is going using the magnitude of velocity, speed, and I can tell y...