Answer:
It destroy both harmful and beneficial microbes.
Explanation:
If scientist added a chemical to destroy the arctic microbes, the beneficial as well as harmful microbes also eliminated from that area where chemical is applied. The removal of harmful microbes is a good thing but the removal of beneficial microbes brings instability in the environment. These beneficial microbes helps in the recycling of nutrients for the plants present there. So the negative effect of chemical is that it also effect the beneficial microbes which are necessary for the ecosystem.
The answer is C. As clouds evaporate into the atmosphere, they will cool down and basically cause steam to form and quickly form into a cloud due to the cool temperature in the sky.
THE ANSWER IS
a scale drawing, looking down on the park