Answer:
Autotrophs.
Explanation:
Autotrophs may be defined as the organisms that can prepare their own food. The autotrophic organism do not depend on the other organisms for their food.
Plants are considered as autotrophs because they can prepare their own food. The autotrophs uses sunlight to convert the water and carbon dioxide into food and oxygen.
Thus, the correct answer is option (3). 
 
        
             
        
        
        
Explanation:
Humus content is another characteristics
 
        
             
        
        
        
Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charge
        
                    
             
        
        
        
Answer:
Oxygen and Carbon dioxide
 
        
                    
             
        
        
        
Answer:
 The answer is b because with more air the clouds would get more water and when the clouds get full it will rain and may cause a flood
Explanation:
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