Question

origin of life on earth​

Answer 1

Answer:

At the time it was widely agreed that stromatolites were the oldest known lifeforms on Earth which had left a record of its existence. Therefore, if life originated on Earth, this happened sometime between 4.4 billion years ago, when water vapor first liquefied, and 3.5 billion years ago

Answer 2

Origin of life on earth was explained by experiment conducted by miller and urey. they suggested that the first primitive organisms arised from simple inorganic molecule from chemical synthesize . they assembled an atmosphere similar to early earth containing molecules like ammonia methane and hydrogen sulphide but no oxygen over water . temperature of about 100 c was maintained and sparks were passed to stimulate lightening at the end of the week 15% of carbon had converted into simple compounds including amino acids which make up proteins