Question

Scientist think colonies of Cyanobacteria called stromatolites were responsible for the introduction of oxygen into earths atmosphere ) true or false

Answer 1

Answer:

Scientist think colonies of Cyanobacteria called stromatolites were responsible for the introduction of oxygen into earths atmosphere is true.

Explanation:

• In primeval earth’s atmosphere, stromatolites (colonies of Cyanobacteria) are believed to have increased the level of oxygen by their photosynthesis process.

• These are the first known organisms that started photosynthesis process and produced the oxygen to the earth’s atmosphere.

• There is a theory that, these organisms produced oxygen in the environment and the organism disappeared that couldn’t live in the atmosphere with the oxygen.

• Scientists gave this a name called as “great oxygenation event”.