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You need to really show passion for your subject by saying all the things that you've done (eg. presentations, work experience, reading), but also make sure that it doesn't read like a list. You need to h...

Mass of oxygen in balloon = 0.02 x 0.21 Mr (O2) = 16 x 2 = 32 Moles = mass / Mr = (0.02 x 0.21) / 32 = 1.31 x 10^4 moles Or 0.000131 moles

According to the third principle of the biological level of analysis behaviour is innate, therefore, to a large extent behaviour has a genetic basis and can be explained using genetics and genetic inherit...

-Atherosclerosis: hardening of blood vessels (specifically those that withstand high blood pressure, ie arteries.)

• Blood vessels are composed of three layers: the tunica intima, tunic...