What can we discuss better by using the theory of electromagnetism? Group of answer choices

A. a group of stars that are located between Polaris and the Northern Hemisphere horizon

B. the graph astronomers use to show the relationship between a star’s absolute magnitude and temperature

C. runaway stars and the paths that they travel

D. the different types of light, both visible and invisible

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 !