Because it could harm wildlife.
        
             
        
        
        
Earth’a temperature was too high for solid rock to form. 
 
        
                    
             
        
        
        
Hello!
Natural selection is the way that animals evolve. 
The theory of natural selection is that the animals that do not have a specific trait to survive in their environment will die. The animals that do have the trait will survive. The animals that survive will then pass the trait down to their offspring, who will also likely survive because they have the trait. This is how species evolve and continue to survive in their environment. 
The species evolve because only the fittest survive (this is known as "survival of the fittest"). The animals that do not have the needed traits will die and they cannot have offspring. 
I hope this helps answer your question! Have a great day!
        
             
        
        
        
Answer:
C. Organisms are now divided into three kingdoms.
Explanation:
In the early 1860s, a German scientist named Ernst Haeckel suggested using a three kingdom system of classification. Haeckel's three kingdoms were Animalia, Plantae, and Protista.