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For natural selection to occur, four conditions must exist. The first is that the population reprodces enough for there to be competition for resouces and survival between the members. The second is that ...

In myelinated axons, the myelin sheath that surround the membrane prevents action potentials forming, hence depolarisation only occurs at the nodes of Ranvier (breaks in the sheath, exposing the membrane,...

‏في نهاية هذا الأسبوع ذهبت الى البحر مع عائلتي و تناولنا في مطعم عربي. بعد ذلك ‏ذهبت إلى السينما مع أصدقائي وشاهدنا فيلم رعب وتعشينا في بيت احد من أصدقائي. ثم ذهبت إلى ‏منزلي ونمت نوم عميق.

We can determine weather the burden of a tax will fall on consumers or suppliers by looking at the price elastcity of demand. Although both groups will usually share the incidence of the tax, the group wi...

'Il faut' is an impersonal expression used to show necessity. In fact, it can be translated as 'it is necessary to'. As it is formed through the verb 'falloir', it has many different tenses. In case the s...