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Select the 2 correct statements that describe cyanobacteria.(1 point)

Responses

Cyanobacteria have complex cells containing a nucleus
Cyanobacteria have complex cells containing a nucleus

Cyanobacteria decreased the levels of oxygen in the atmosphere
Cyanobacteria decreased the levels of oxygen in the atmosphere

Cyanobacteria lived in the ocean
Cyanobacteria lived in the ocean

Cyanobacteria were the first photosynthesizing organisms
Cyanobacteria were the first photosynthesizing organisms

1 answer

The two correct statements that describe cyanobacteria are:

  1. Cyanobacteria lived in the ocean.
  2. Cyanobacteria were the first photosynthesizing organisms.

Cyanobacteria are prokaryotic organisms (they do not have a nucleus) and are known for being some of the first organisms to produce oxygen through photosynthesis, significantly contributing to the oxygenation of the Earth's atmosphere.