Answer:
So there's a simple explanation for the Great Oxidation Event. It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere. ... That means the cyanobacteria were busy pumping out oxygen for at least half a billion years before oxygen started appearing in the air.
Explanation:
 
        
             
        
        
        
I believe that the answer is telophase were the Nuclear envelope becomes visible again.
Hope this help.=)
        
             
        
        
        
Photosynthesis is a process in which a plant uses sunlight to create food, using CO2 and water. 
 
        
                    
             
        
        
        
The set of characteristics provided by Audesirk and Audesirk are: Animals are multicellular. Animals are heterotrophic, obtaining their energy by consuming energy-releasing food substances. Animals typically reproduce sexually. Animals are made up of cells that do not have cell walls.
        
                    
             
        
        
        
<span>The summer solstice is the longest day of the year because the earth is tilted toward the sun</span>