Present day glaciers are found primarily in A. Canada and Greenland
B. Canada and Iceland
C. Antarctica and Greenland
D. Antarctica and Iceland

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.