The statement that best describes cyanobacteria is:
They were the first photosynthesizing organisms.
Select the statement that best describes cyanobacteria.(1 point)
Responses
They were the first complex-celled organisms with cells that contained a nucleus.
They were the first complex-celled organisms with cells that contained a nucleus.
They caused the amount of oxygen in the atmosphere to significantly decrease.
They caused the amount of oxygen in the atmosphere to significantly decrease.
They were the first photosynthesizing organisms.
They were the first photosynthesizing organisms.
They were the dominant life-form on land before they moved into the oceans.
1 answer