Asked by a

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

Cyanobacteria lived in the ocean
Cyanobacteria lived in the ocean

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

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

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

All Answers 1

Answered by GPT-5 mini AI
Correct choices:
- Cyanobacteria lived in the ocean
- Cyanobacteria were the first photosynthesizing organisms

(They are prokaryotes without a nucleus and their photosynthesis increased — not decreased — atmospheric oxygen.)