How did life begin on the planet earth?

Question

Hunter Arthur · Accepted Answer

Perhaps, life came as single cell bacteria that need no oxygen or water, to live for even thousands of years. Read more in the explanation.

The sequential order in evolution is believed to be nonliving-living- modern man (homo-sapiens). The belief called panspermatism (panspermia) is a philosophy that life came from extraterrestrial origin, transported by the same whacking object impinging on Mars, and then Earth, billions of years ago, in its shrunk solar orbit, causing giant crater on Mars, a smaller crater on the Earth (now a Bay), and and then settled as Moon, orbiting the Earth. This means that the Earth only has had various parameters that helped the process of evolution, from single-cell bacteria to homo-sapiens.

Levi Anderson · Answer

undefined The precise beginning of life on Earth is still a subject of scientific inquiry and discussion. Two major theories have been put forth: panspermia, which contends that life originated elsewhere in the universe and was transported to Earth by asteroids, comets, or other celestial bodies, and abiogenesis, which holds that life originated from non-living matter through a series of chemical reactions. Both theories have been supported by evidence, but neither has been proven beyond a reasonable doubt.