how the first life form on the earth
Answers
Answer:
The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
Answer:
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Explanation:
MONERANS were the first life form on earth.
MONERANS include -
BACTERIA , CYANOBACTERIA etc.
#note
The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
#ADDITIONAL INFORMATION IF YOU WANT
1.Stromatolites, like those found in the World Heritage Area of Shark Bay,Western Australia, may contain cyanobacteria, which were most likely Earth's first photosynthetic organisms. The earliest evidence for life on Earth arises among the oldest rocks still preserved on the planet.
2.Earliest life forms. Fossil evidence informs most studies of the origin of life. The age of the Earth is about 4.54 billion years; the earliest undisputed evidence of life on Earth dates from at least 3.5 billion years ago. There is evidence that life began much earlier.
3.Evolution is the process of change inall forms of life over generations, andevolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits.