Why is it useful to express a number in scientific notation? A. Scientific notation removes fractions from math problems.
B. It makes large numbers easier to compare and work with.
C. Scientists couldn't use calculators to do their work otherwise.
D. Scientific notation is more accurate than writing out a number.

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 !