Which of the following is the least dense?

asthenosphere
continental crust
core
mantle
oceanic crust

The valve seat performs two functions: it provides a seal for the valve in the combustion chamber, and it provides a cool surface to carry heat away from the valve. most valves use a seating angle.

Arrange the following in order from the shortest wavelength to the longest wavelength. visible light gamma rays radio waves x-ray waves microwave infrared

What is the term for a loan with a cosigner? an automobile loan a guaranteed loan a consignment loan a contractual loan