I believe it is E and C. Hope this helps!! Brainleist Please!!!
        
             
        
        
        
Answer: A
Explanation: 
Oxygen makes up another 20 to 21 percent of our atmosphere. It's essential for life on Earth, and interestingly enough, it is poisonous when highly concentrated. Our concentration of 20 to 21 percent seems just right.
 
        
                    
             
        
        
        
Answer:
Pluto is big enough to be considered a dwarf planet, but it has not been classified as such in some peoples views such as Quaoar and Sedna.
Explanation:
The both reach the otter layers of the solar system just like Pluto and are as I said above big but not big enough to be considered a dwarf planet 
 
        
                    
             
        
        
        
Answer:
D. There is a reduced use of pesticides, herbicides, and fertilizers
Explanation:
 
        
                    
             
        
        
        
Answer:
Yes they do.
Explanation:
Both plant and animal cells contain ribosomes. Some may be found floating in the cytoplasm while others may be found in the rough Endoplasmic Reticulum.