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blue green algae archebacteria
1.4 billion years ago
increased oxygen in the atmosphere caused the extinction o many single-celled organisms.
Bacteria, the most numerous organisms on Earth , are unicellular organisms - just had this question on a homework
Cyanobacteria is the most ancient group of organisms on this earth.
because the earth spins
Earth's first organisms were the Single- Celled organismsBacteriaFungiAnd Protozoa
Because of the relative positions of the earth, sun and moon.
Bacteria.
Protists
blue green algae archebacteria
Because, as the earth rotates it casts a shadow on the moon
Bacteria.
bacteria
Yes
Archaea and Bacteria
some pig