Water pollution affects marine ecosystems by completely killing it off. Pollution kills fish, reefs, and other underwater life. With this pollution, animal's behaviors can change, and habitats are destroyed.
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Two notable ways than setting fishing limits can help protect fish species:
Preservation of fish - this prevents extinction, and at the same time helps other species of fish catch their prey. Thus, making the food chain stable.
Preserves the nature of underwater - fishes tend to take care of their underwater world, and preserving them helps maintain the appearance under the oceans and sea.
Answer:
t=17.61 years.
Explanation:
Given that
Reserve of energy = 10,000 EJ
Energy used by human = 18 TW
We know that


So



Lets t time after energy will be exhaust
So



We know that
1 year = 365 days
1 year = 365 x 24 hr
1 year = 365 x 24 x 3600 s

So

t=17.61 years.