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Why is single stage rocket not used often?

Why is single stage rocket not used often? Correct Answer Low delta-v

The maximum delta-v of the rocket for a given fuel to dry mass ratio is too less for the single stage rockets. The delta-v which is required to reach low earth orbit requires a large wet to dry mass ratio which is not present in single stage rockets. This is overcome by making use of multi-stage rockets by jettisoning the stages when they run out of propellant. This staging allows the thrust of the remaining stages to accelerate easily and reach the final speed.

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S1:When a satellite is launched, the rocket begins by going slowly upwards through the air.
P :However, the higher it goes, the less air it meets.
Q :As the rocket goes higher, it travels faster.
R :For the atmosphere becomes thinner.
S :As a result there is less friction.
S6:Consequently, the rocket still does not become too hot.

The Proper sequence should be:
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