The first organisms to appear on Earth were likely single-celled microorganisms such as bacteria and archaea. These organisms emerged around 3.5 - 4 billion years ago in a primordial soup of chemicals and developed into more complex life forms over time.
blue green algae archebacteria
Colonial organisms first appeared on Earth about 600-700 million years ago during the Ediacaran Period. These organisms were multicellular but lacked specialized tissues or organs.
Earliest life form is microbe, a unicellular organism. First bacteria can dated back to 3.4 billion year ago. Emergance and true cut point from being a replicating molecules to a living cells is still unknown.
In my knowledge, the microorganisms lived first on earth.
There are several theories on how the first organisms on Earth obtained energy. The generally accepted theory is that these organisms harvested organic substances from the primordial soup of energy-rich molecules.
because the earth spins
Because of the relative positions of the earth, sun and moon.
Bacteria.
some pig
The very beginning.
Because, as the earth rotates it casts a shadow on the moon
blue green algae archebacteria
Yes
bacteria
Bacteria.
Archaea and Bacteria
The first type of organisms to appear on Earth were single-celled prokaryotic organisms, such as bacteria and archaea. These organisms are among the most ancient forms of life and played a crucial role in shaping the planet's early environment.