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Solve the following equations for x and y: x + 2y = 4 2x + 3y = 7 We are going to solve this using the elimination method. This means that we are going to either add or subtract the equations from each other...

In questions like this, you must set out your answer clearly (which makes it easier for the marker to give you marks). One way of doing this is writing sentences such as: _____ in the hormonal response, comp...

The Doppler Effect is the strectching and compressing of waves caused by the movement of the source. Put more simply, when an object emits a sound - say a van beeping its horn it produces a sound of a certai...

Hydraulic action: This process involves air particles finding their way into the cracks of rocks. This then causes air particles to compress which adds pressure, causing rocks to break away and erode. Abrasi...

Mitosis , or cell division, is a process where a single cell divides into two identical daughter cells . When answering this question it is important to be clear about what is being replicated. Simply saying...