Provide an example of an isolated energy system and explain how it could be changed to create an open energy system. you may use the examples provided in the lesson or another example.

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

What is generally true of the lower house in a state legislative branch ?

Why some people argue that the new deal reinforces traditional gender differences