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What is the difference between communicable and non-communicable diseases?

Communicable diseases are diseases that can be transferred from one person or organism to another, for example colds are spread by airborne droplets and malaria is spread through mosquito bites. Non-commu...

Answered by Ellie B. • Biology tutor

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How can I improve my Spanish accent and pronunciation?

The most effective way to improve your Spanish accent is by practicing! Make the most of every opportunity you have to speak Spanish, whether that be with your teachers, fellow pupils or friends. Practici...

Answered by Max G. • Spanish tutor

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What is a dynamic equilibrium?

In a dynamic equilibrium, both the forward reactions and backward reactions are still happening, but at the same rate. This means that the concentrations of the starting reactants and the products remain ...

Answered by Ellie B. • Chemistry tutor

3221 Views

Find the two real roots of the equation x^4 - 5 = 4x^2 . Give the roots in an exact form. [4]

x⁴ - 5 = 4x². In order to find the roots of this equation we must factorise it, and, to do so, it must be rearranged such that all the terms are on one side. Therefore, subtract 4x

Answered by Sanjay S. • Maths tutor

8339 Views

Explain the difference between osmosis and diffusion.

Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration, through a partially permeable membrane.Diffusion is the movement of molecules from an area of...

Answered by Alexander R. • Biology tutor

4555 Views