6. tell the two main human sources of the most prevalent greenhouse gas, co2. (hint: think about how you got to school this morning and what powers your cell phone, computer, tv, et cetera.)

the best answer I can think of is electricity and gasoline

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8