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The star begins as a stellar nebulae. This is a dense cloud of gas and dust containing hydrogen and helium. As it is under a large amount of gravitational pressure, this nebula will then collapse under...
A salt is an ionic compound which is made up of two groups of oppositely charged ions.The overall compound of a salt compound must have an overall electrical charge of 0.Ammon...
Neurones can either be myelinated - they are sorrounded by a myelin sheath, or unmyelinated - they are not surrounded by a myelin sheath.The myelin sheath is made up of Schwann cells and there are g...
Adenosine triphosphate (ATP) is a small molecule that acts as a coenzyme within a cell.The main role of ATP is to provide energy. Below are the ways it provides energy which can described in an exam...
Definition: River erosion is a process through which the riverbed, banks and rocks are worn away. There are 4 key types of river erosion:CRAnswered by Chloe R. • Geography tutor28533 Views
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