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Granules of plastic powder are poured or fed into a hopper which stores it until it is needed. A heater heats up the tube and when it reaches a high temperature a screw thread starts turning. A motor turn...

-Large surface area to volume ratio: the lungs contain millions of microscopic air sacs called alveoli, which are the sites of gas exchange in the lungs. The large number of alveoli means that the lungs h...

Unicellular organisms have a large surface area to volume that is one cell thick, therefore they have a short diffusion distance and are metabolically inactive. Therefore, they can obtain sufficient oxyge...

Starting by factorising the curve equations: the first one factorises to y = (x-3)(x-2) and the second one becomes y=(2-x)(2+x). From this, a rough sketch of the curves can be drawn and it can be seen tha...

Before starting anything read the poem through twice. The first time read it just to understand meaning and get a grasp of what the author might be trying to say. The second time read the poem and highlig...