Please help!! order these from simple to complex, molecules, atoms, organism, tissues, cells, organ systems, and organs

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

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Under which of the following circumstances would natural selection not operate on an organism