Answer:
Muscular contractions that moves food along the digestive tract.
Answer:
As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.
Explanation:
Explanation:
1 sulfur dioxide 2 monosulfur dinitride 10 nitrogen dioxide
