Question

The development of ____ factored in the development of complex organisms.

Answer 1

Salutations!

The development of ____ factored in the development of complex organisms.

The development of oxygen, ozone, cyanobacteria factored in the development of complex organisms. 

Hope I helped.

Answer 2

The development of ozone, oxygen, and cyanobacteria factored in the development of complex organisms. The cyanobacteria or also called blue-green algae are microbes  use the sunshine, water and carbon dioxide to conduct photosynthesis and produce carbohydrates oxygen.

This great oxidation event changed the Earth and life on Earth forever.