What are the two most influential greenhouse gases in maintaining the earth's climate? a) carbon dioxide & silicon b) water vapor & carbon dioxide c) silicon & oxygen d) nitrogen & water vapor

An engineer designing a new type of engine needs a liquid that can be heated and cooled quickly with as little exchange of energy as possible. which property should the engineer primarily look for in the liquid? a. low thermal conductivity b. low specific heat capacity c. high reactivity d. high internal energy e. high density