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Describe the structure of a plant and explain it's functions. (6 marks)

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 palisade l...
US
Answered by Uswa S. • Biology tutor
12967 Views

How does the body fight off an infection? Like when someone catches a cold.

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 types...
AC
Answered by Alisha C. • Biology tutor
3122 Views

What is the ablative case?

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 grammatical ...
HU
Answered by Hamish U. • Latin tutor
13962 Views

What are the main challenges that the EU has posed to the European nation states?

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 shoul...
VM
Answered by Victor M. • Politics tutor
2004 Views

where does gas exchange occur in the lungs

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 be...
AG
Answered by Amelia G. • Biology tutor
6851 Views