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Homeostasis is the maintenance of the internal environment to a constant state, despite changes to the external environment. Examples of conditions in the body which must be kept constant include body temper...

First, remember the compound angle formula for cosine: cos (2x) =cos^ 2 (x)-sin^ 2 (x). Now use the identity sin^ 2 (x)+cos^ 2 (x)= 1 to give : cos (2x) =(1-sin^ 2 (x))-sin^ 2 (x)=1 -2sin^ 2 (x) Rearranging ...

The colour of the sky comes from sunlight scattering off of the air molecules (and to your eyes). Blue light gets scattered more than red light because it has a shorter wavelength, and so the light you see w...

Intro: The US civil war is a complex part of history known for not having one key starting point. Economics, politics, culture and the issue of slavery all contributed to the fal out between the north and th...

There is an inverse relationship between price and quantity demanded. When the price is low, high quantities are demanded and vice versa when the price is high; for all goods which are not giffen goods. Howe...