Distance and period of time is the correct answer
Hope this helps!
<span>the formation of a gas
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I believe it would be CS and GE (option 3). i hope i helped ya out.
A drop of iquid mercury is D. <span> a pure substance and an element. This is because mercury is an element which exists as liquid in the normal or standard conditions. It is a metal that is toxic to all environments. It is pure because it is composed only of one kind of substance.</span>
