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Hello there.
What is air pollution ?
Air of a substance that has a harmful and/or poisonous effects.<span>
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What is air pollution?
Air pollution is the presence in or introduction into the air of a substance which has harmful or poisonous effects.
                                
             
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Answer:
She looks after her aged parents.
Explanation:
Present indefinite tense=Simple present tense
 
        
             
        
        
        
        
<span> the answer is 
10118545.</span>
        
             
        
        
        
Um how can we help you if we dont have the whole text sir?
        
                    
             
        
        
        
Answer:
jean help out sam when sam fell at the state park, sam was hurt. 
the difference between them is sam go hurt jean went to go help.
Explanation: