If 1250 J of work is done on an object that weighs 50 N, how far can that
object be raised?

1200

Explanation:

If it was 1250 J of work done, and a object that weights 50 N, you subtract 50 from 1250 which is 1200 J. Work has been done, so you subtract the high number from the lowest.

the organisms are not adapted to live in some communities or habitats.

b is the best answer for this question.