The development of Ozone, Oxygen, Cyanobacteria <span>factored into the development of complex organisms. The correct option is the last option.
</span>The end of the Paleozoic Era was signaled by mass extinction of land and sea animals. The correct option is the second option.
Reptiles evolved from an ancestor of amphibians that developed an egg with a strong outer shell that kept it from drying out. The correct option is the first option.
        
             
        
        
        
I’m sorry i don’t understand this
        
             
        
        
        
Answer: The correct option is A.
Temperature of the water
Explanation:
This is because dependent variable is variable that cannot stand alone but depends on another. It is the effect in an experiment. It is what that is been measured or tested in an experiment. Temperature if the water is dependent variable because it's what is been tested or measured in that experiment. It depend on other variables.
 
        
             
        
        
        
Answer: 
Our molars are your largest teeth. Their function is similar to that of the premolars, to grind, tear, and crush food. Molars have a large flat biting surface which makes them perfect for this job.
Explanation: