Answer:
 this is a common ... saw incredible similarities between birds and the theropod dinosaurs (especially ... Like all other reptiles, birds have scales (feathers are produced by tissues similar to ... for theropods are often more serious for the "thecodont" pseudo-hypothesis.
Explanation:
 
        
                    
             
        
        
        
Answer: Air pollution is responsible for seven million deaths each year in the US
Explanation:  https://www.who.int/health-topics/air-pollution#:~:text=The%20combined%20effects%20of%20ambient,cancer%20and%20acute%20respiratory%20infections.
 
        
             
        
        
        
Most adult placental mammals have no remaining trace of the cloaca. Being placental animals, humans only have an embryonic cloaca, which is split up into separate tracts during the development of the urinary and reproductive organs.
 
        
             
        
        
        
One will be due to climatic change or it might be coz of evolution
        
             
        
        
        
the answer is Insertion mutation :)
(search up "types of mutations")