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Same number of protons (6 protons - atomic number) and different number of neutrons (6 neutrons in C-12 and 8 neutrons in C-14).

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 s...

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 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 p...

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 a...