Answer:
Abiogenesis
Step-by-step 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.