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Evolution is a gradual change in the inherited traits of a population over many generations. 

Natural selection is a mechanism where the members of a population best suited to their environmen...

The concept of a mole can be difficult to get your head around.

We are used to giving some numbers names, for example 1 million instead of 1,000,000. And we can use a million as a unit, 3 mill...

While we always capitalise the first letter of all countries and nationalities in written English, the same cannot be said for written French. While in French, countries ar...

professional psychological organisations lay down guidelines and rules that need to be followed in order to avoid harming our participants in any way. this moral guidelines ensure that all experiments...

Differentiation of arctan(x), also written tan^(-1)(x), requires a little knowledge of regular trigonometric algebra and differentiation, ...