How does a field experiment differ from a natural experiment?

Summarize possible ways in which phases of matter could combine to form a solution.

What energy is it when you flip on a switch on a lamp

Need what is special about water as a compound? how does water regulate climate? what drives water evaporation?   why is the water vapor fresh water when it rises from the ocean? why might freshwater in the form of snow take longer to enter the water cycle again than liquid precipitation?   what is an aquifer? what role do people play in the water cycle? plz just answer as many as you can ! thx if you !