Frances' classroom faces west. When the sunlight comes in through the windows, it gets very warm in the classroom. What scientific principle(s) will be most helpful to Frances in designing a solution to this problem?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons