Continental polar (cP) and maritime tropical (mT) air masses influence the weather of North America most.
Answer: The kind of test that can be performed to make sure that you are not accidentally trying to sell a fool's gold (iron pyrite) is called the Acid Test.
Explanation: This Acid test is performed by making a little scratch on the gold and adding drops of a liquid nitric acid on that spot, after adding the nitric acid, if the spot turns green it is a fake gold but if the spot is unaffected, it is a real gold.
United States of America, Canada, and Mexico
Answer: <em>air also has water vapor</em>
<em />
<em>Explanation: hope t helps i remember this from science last year but i probably forgot about it</em>
<em />
