Answer:
1. What happens when air is heated or cooled? ... So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.
Step-by-step explanation:
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Answer:
X = -2, y - 0 x = 3, y=10
Step-by-step explanation:
I don’t know im not really Sure
