Gas can start your lawn mower, gas can start your fireplace (if
it is a gas fireplace), gas can cook your food on the stove (if it
is a gas stove), and gas can cook your food on the grill (if it is
a gas grill).
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A gas can not be strong or weak.
It is a gas or it is not a gas.
(Gas is one of the four 'States of Matter': plasma, gas, liquid, solid)