Why should an ecosystem bounce back quickly to pre disturbed state even in the face of the disturbance? ​

Iwill give anyone points if they me right now q: sustainable development is related to pollution in that a. sustainable development allows pollution to continue at current levels. b. sustainable development increases pollution of all types. c. addressing pollution is a factor in sustainable development. d. sustainable development incorporates pollution as a benefit. e. pollution levels will decrease with development.

98 points! include an answer and in advance!

30 a town is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.