Which of these is the best explanation of how a smooth round
stone became smooth? - ANSWER It was in a stream for a long
When a lobster grows a claw to replace one that was lost, the
process is called - ANSWER regeneration.
Any astronomical body that revolves around a larger body is
called - ANSWER a satellite.
In chemistry, to be classified as an organic substance, a
substance must contain - ANSWER Carbon atoms.
Which element does NOT contain any neutrons? - ANSWER
hydrogen
The chemical formula of a compound describes the elements the
compound contains and the - ANSWER ratio of elements in the
compound.