Cover of
4. Assess the importance of variations to
natural selection. SC.7.L.15.2

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?

How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj