Which theory states that living things started out as nonliving?

Abiogenesis

Explanation:

It presumes that biomolecules were formed from abiotic elements in the early earth when there was no life. The earth’s atmosphere was mainly filled with methane and carbon dioxide. Lightning strikes and the higher temperates then caused the gas molecules to form rare compounds such as amino acids and other life precursor molecules. This has been demonstrated by the classic 1952 Miller–Urey experiment.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.