Based on the data in the graph what can be said about current carbon dioxide levels A. they are much lower than normal
B. they are far higher than the highest natural levels
C. they are at the high point of a natural, repeating cycle
D. they are no different from levels in the past

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.