As to the Abiogenesis Hypothesis, this from an answer on Quora :
" Four billion years ago, the Earth’s atmospheric and surface conditions were dramatically different from what they are now, so we wouldn’t expect to see abiogenesis occurring today. But what we WOULD expect to see is that prebiotic conditions should be able to create the basic building blocks of life.
So researchers did exactly that. They used a reducing atmosphere—containing ammonia, methane, carbon dioxide, hydrogen, hydrogen sulfide, water, etc.—and combined it with the expected temperatures, atmospheric electrical activity and ultraviolet light of an early Earth, and let them “cook” for a while. They found that even under a wide variety of different prebiotic conditions, it only takes a few days to spontaneously form dozens of the complex organic molecules essential for life. The repeated heating, cooling and irradiation of these molecules, as would be expected on a prebiotic Earth, can also cause the spontaneous formation of ribonucleotides. And ribonucleotides exposed to certain natural clays can spontaneously assemble into strands of RNA. Not only is RNA capable of self-reproduction, which is a fundamental requirement for life, but it’s very close in structure to DNA, which is the genetic blueprint of almost all life. Furthermore, the most primitive life on Earth is actually based on RNA, so finding a natural pathway to the formation of RNA is a huge step. Not only that, but simple fatty acids that also form naturally in prebiotic conditions AUTOMATICALLY assemble into structures resembling cell membranes. And under the right conditions, DNA inserted into those cell membrane-like structures can successfully replicate.
This does not mean we have figured out the entire process that led to the formation of the first life—at least not yet. But since all of the critical initial steps occur automatically under natural conditions, this is powerful evidence that we’re on the right track. Thus, abiogenesis is INCOMPLETE, not failed."