Answer:
hypothesis is an idea or explanation that then test through study and experimentation
This question isn't really finished, but bacterium are unicellular prokaryote.
I hope this helps?.. :S
3.8 billion – 2.5 billion years ago
The Archean is the name of the age which started with the shaping Earth. This time of Earth's history endured quite a while, over 2.5 billion years. When the archean age ended the earth was just coming alive.
The bacterium vibrio cholerae, a rod-shaped gram negative organism
