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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...