What is the problem with a series circuit? * A. They do not work
B. 1 goes out, they all go out
C. They are hard to create.

What was bohr’s contribution to the planetary model

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

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 !