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• Thin alveolar walls for O2 and CO2 to travel through - To travel across the membrane, gases have to be dissolved, so the alveolar walls are moist - Large surface area to volume ratio allows for maxi...

Rather than aimlessly searching through a novel looking for a quote, it is far easier to have a bank of quotes that you know well and can analyse, which can be applied to a variety of questions. To make s...

To tackle this question, start by expanding the brackets:
12x + 4y = 12 - 2y
Making x the subject of the equation requires x to be on its own. 
So, in this example, we need to first get ...

The play The Tempest is itself a giant spectacle; from the grand illusionary storm which opens the performance and continuing throughout, all in the name of achieving Prospero’s engineered plot. The use o...

There is genetic diversity within the population. Random mutation can occur, forming new alleles of a gene. Though many mutations are harmful, in certain environments the new allele may benefit its posses...