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A waxy cuticle is present. This is a waterproof, transparent layer that prevents evaporation of water due to heat from the sun. Because it is transparent, it allows sunlight to pass through to the palisad...

The body has many ways in which it deals with 'foreign invaders', like a rhinovirus (the virus responsible for the common cold). Once an infective micro-organism enters the body, lots of different cell t...

Latin is very clever. It's much more economical than English and can get across a lot of meaning in much fewer words. A good example of this is the ablative case, which is probably the strangest grammatic...

The functioning of the European Union is founded on two foundations: The Treaties, and the enforcement of the Treaties. The Treaty on the Function of the European Union, TFEU, defines how Member States sh...

gas exchange occurs in the alveolus of the lungs. Alveoli provide a good surface for gas exchange to take place.They provide a large surface area to volume ratio which increases the amount of gas that can...