Top answers

How does osmosis and diffusion work?

Osmosis and diffusion are two words used to describe the movement of molecules. Molecules are like people. They don't like to be squashed into small areas with lots of other molecules surrounding them. Molec...
JD
Answered by James D. • Biology tutor
5668 Views

How do you plan an answer during an exam?

Firstly, you have to find the method that works best for you. I'd suggest that you try a few out and then choose which you find the most helpful, and then use it for your revision and practice questions. I f...
EE
Answered by Eleni E. • History tutor
3986 Views

Solve the simultaneous equations 2x - 3y = 7 and 3x + 4y = 2. Do not use trail and improvement.

[ 2x - 3y = 7 ] *3 = [ 6x - 9y = 21 ] [ 3x + 4y = 2 ] *2 = [ 6x + 8y = 4 ] [ 6x + 8y = 4 ] - [ 6x - 9y = 21 ] = [ 17y = -17 ] Therefore, y = -1. Substituting y = -1 into the original equations and solving fo...
EH
Answered by Elizabeth H. • Maths tutor
15232 Views

State one property that all EM waves have in common.

All EM waves travel at the same speed in a vacuum.
EH
Answered by Elizabeth H. • Physics tutor
3182 Views

How many people died during Mao's Great Leap Forward?

Mao's Great Leap Forward 'killed 45 million in four years'
IW
Answered by Isabella W. • History tutor
3579 Views