UPSC CDS English Ordering of Sentences Part 1 Questions

S1 : It is doubtful if mankind, throughout his long history, has ever lived at all ‘sustainably’.
P : But in general mankind has regarded the environment as an endless ‘resource’ to be exploited and plundered.
Q : May be a few isolated tribal groups foundthe necessary balance with nature lived without the desire for endless ‘more’.
R : Now we have reached a point where we are on the verge of destroying ourselves and most of the life on earth.
S : This process has accelerated greatly since the industrialrevolution.
S6: The concept of ‘sustainable’ is so far from reality that it is almost laughable.