Question

17. Summarize the theories on how life on Earth began

Answer 1

17. Organic molecules could have shaped instinctively in Earth's early atmosphere, and lesser molecules could promise together to shape big organic molecules.

18. Approximately of the first large organic molecules to form and self-replicate were RNA molecules, with DNA molecules starting much later.

19A. An ocean water covering small organic molecules, like those shaped in the Miller-Urey test, marked against hot sand, clay, or rock. As the water vanished on the hot surface, the trivial organic compounds could have fused together. 

B. If RNA molecules could self-replicate, it would mean that every time a microsphere divided, the early genetic coding in the RNA would permit to the again formed microspheres.

C. Scientists have create fossils of microscopic bacterial cells in rocks that are over 3.5 billion years old

D. The occurrence of small organic molecules (through unplanned synthesis or since meteorites), meeting of these molecules into bigger organic molecules/polymers (such as RNA and protein), and RNA molecules develop self-replicating, the packing of groups of molecules into microspheres that are capable to uphold an interior chemistry dissimilar from surrounds.