The nurse should teach pursed-lip breathing in a patient with chronic obstructive pulmonary disease. This kind of breathing allows the patient to exhale most of the air trapped in the lungs, as hyperinflation is very evident in COPD. The nurse should instruct the patient to inhale slowly for 3 seconds, purse the lips, contract abdominal muscles, and exhale slowly.
        
                    
             
        
        
        
Answer:
Seaweed (producer) → Shrimp (primary consumer)→ Crab (secondary consumer) → Octopus (tertiary consumer)
Explanation:
In a food chain, there are organisms of different trophic levels present. Food chain, the chain or linear network or representation of a line of the food web that always starts with a producer as sea-weed in the given food chain and ends with a predator or third or highest consumer which is Octopus here and in between the different level of consumers from the primary consumer that depends on the producers and secondary consumer depends on primary and so on.
Seaweed (producer) → Shrimp (primary consumer)→ Crab (secondary consumer) → Octopus (tertiary consumer)
 
        
             
        
        
        
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Oxygen<span>, </span>sulfur<span>, </span>nitrogen<span>, and </span>hydrogen<span>.
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D. Enzymes and antibodies