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Draw diagrams to represent the particles in each state: solid, liquid, and gas.

The box for the solid should be an orderly set of circles with no gap between each one. The box for the liquid represents molecules with more energy but not all bonds have been broken. Therefore the box shou...
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Answered by Alex V. • Physics tutor
6738 Views

Can you explain to me the difference between diffusion, osmosis and active transport?

The key thing here is to note that both diffusion and osmosis are passive processes, and active transport is an active process. A passive process is one which does not require any energy in order to occur, a...
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Answered by Lizzie R. • Biology tutor
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With an example, describe what is meant by a destructive plate boundary and what feature (s) may form as a result.

A destructive plate boundary exists when a continental and oceanic plate boundary meet. The oceanic plate descends underneath the oceanic plate as it is denser. The build-up of friction between the two plate...
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Answered by Michael H. • Geography tutor
4205 Views

How do I solve two simultaneous equations?

Supposing we have two equations x+2y=5 and 3x-y=10 and we want to find x and y we can use the following techinque. Multiply both the RHS and the LHS of the second equation by 2, giving us 6x-2y=20. Then add ...
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Answered by Theano X. • Maths tutor
4550 Views

Explain the process of evolution

Individuals within a population show a wide range of variation due to differences in their genes. The individuals within these species/populations with the characteristics most suited to their environment su...
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Answered by Seyi A. • Biology tutor
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