The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of 1:45.57. Assuming that the distance was measured accurately to five significant figures, what was the skater's average speed in miles per hour?

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.