Are compounds considered pure substances?

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

In 2002, the rare earth elements mine in mountain pass, california was closed because