Simplest oxygen-producing organisms are _____?

آسان ترین آکسیجن تیار کرنے والے حیاتیات _____ ہیں؟

Viruses

Bacteria

Cyanobacteria

None of these

Cyanobacteria (blue-green algae) are the simplest photosynthetic organisms that produce oxygen through photosynthesis.

They played a crucial role in forming Earth’s oxygen-rich atmosphere.