Air pressure gradient. Differences in air pressure cause wind. The greater distance, the faster the wind. Hope this helps :)
Explanation:
Molecules contain two or more atoms and are held together by covalent bonds, whereas compounds are held together by ionic bonds. Two or more elements bonded together through ionic attraction.
Axon: the messenger cell that carries the command to contract muscles.
False. Evaporation is a physical change it is not a chemical change. It is a physical change because it is going from the liquid phase to the gas phase. It is not a chemical change because it is still made of two hydrogen atoms and an oxygen atom.