so if you look up things that can cause an asthma attack it will also show that viruses and bacteria are a cause. with asthma you lungs could already be inflamed as well as your air way wich makes it harder to breath. when you have c-19 it will inflame your lungs even more so it makes it even harder to breath given an asthma attack. more asthma attack now are probably caused by c-19 because it is all over the place and the percent of asthma attack by virus has dramatically increased. 
 
        
             
        
        
        
Answer:
the third option, commensalism
Explanation:
 
        
             
        
        
        
A Excess salt deposited in the soil when irrigation water evaporates is correct (apex)
 
        
                    
             
        
        
        
Answer:
"Examine the list of all known species of birds and determine if any species cannot fly" would be the most reasonable answer.