they have lived for up to millions of years
It is believed to have taken about 2 billion years for unicellular organisms to evolve into multicellular organisms. The transition from unicellular to multicellular life forms is thought to have occurred around 600 million years ago.
they have lived on earth for about 6000 years
unicellular, however sometimes they are associated in groups or long strings.
Lobsters have lived on the earth for 250 million years.
why do we need to know what organisms live long time ago
Unicellular organisms that reproduce by mitosis are considered immortal because they can continuously replicate their genetic material without aging or experiencing cell death. This allows them to potentially live indefinitely as long as they have the necessary resources for growth and reproduction.
Answer 1Unicellular organism evolved first.Answer 2Both unicellular and unicellular organisms had been created in the meantime by God on the creation of earth. These organisms; by God will; had been evolved to be adapted to nature.
The Earth has been habitable for living organisms for about 3.5 billion years.
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Fossil Fuels:)
about 100million yrs
For hundreds and millions of years