Q1:

S₁: Throughout history man has used energy from the sun.

P : Today, when we burn wood or use electric current we are drawing an energy.

Q : However we now have a new supply of energy.

R : All our ordinary life depends on sun.

S : This has come from the sun.

S₆: This energy comes from inside atoms.

The Proper sequence should be:

Question

S₁:	Throughout history man has used energy from the sun.
P :	Today, when we burn wood or use electric current we are drawing an energy.
Q :	However we now have a new supply of energy.
R :	All our ordinary life depends on sun.
S :	This has come from the sun.
S₆:	This energy comes from inside atoms.

The Proper sequence should be:

Ordering of Sentences