What system moves O2 and CO2 around?

Last week i was assigned a thematic. we have groups of three but the people i was assigned with haven't been in school for days. i would appreciate if anyone can me with my thematic . i highlighted most of the important steps and i circled my thematic topic. in desperate need : ( its due on february 19

Amajor source of energy for your body comes from

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.