I'm pretty sure the answer is atmosphere, hope this helps!
Yes it can absorb light if its an organelle
The main storage reservoir for water on earth is ground water
You could also say that the neutron is the odd man out because the number of protons and electrons are the same because the negative charge from the electronics attracted to the positive charge from the proton.
On the next line you could say the election is the odd man out because the protons and neutrons reside in the nucleus and the electrons fly at high speeds in the electron cloud.
RNA is a single stranded molecule that contains uracil