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Pepsi [2]
4 years ago
7

When air is heated it becomes

Biology
2 answers:
bogdanovich [222]4 years ago
5 0

Answer:

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. This is the concept used in the hot air balloons.  

hope it helps

julia-pushkina [17]4 years ago
3 0

Answer:

It becomes lighter and goes up.

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D) Each parent contributes one allele for this trait  

Explanation:

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Hope it helps!

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