Question

Which is the first oxygen-producing organism?​

Answer 1

Cyanobacteria is the first Oxygen- producing organism.

hope it helps..

Gunnie❣️✨

Answer 2

Answer:

Cyanobacteria

Explanation:

Cyanobacteria is the first oxygen-producing organism.

You have wished your Canadian friend's Bday.

And you have answered my one of my question and it got deleted, I donno what have you told...