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.
Answer:
DNA between a human and a banana is 41 percent similar.
Explanation:
Water and carbon dioxide are waste products released as a direct result of materials
Answer: False
Explanation: the masses of reactants are always the same as the products in order to conform to the law of conservation of mass.