enables you to ride a bike without skidding and falling. Static friction
Sliding friction
Rolling friction
Fluid friction

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

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 !