Decomposers, as the name suggests, decompose dead plants or animals into simple compounds. They feed on dead producers from the first levels or consumers from other three levels. Breaking them down, decomposers release nutrients that producers can use.
In an ecosystem with four levels, the first level are producers, such as plants and algae. On the second trophic level, there are primary consumers, herbivores that eat plants, for example, a deer, a rabbit, a grasshopper. The next trophic level belongs to secondary consumers that eat herbivores, for example, a wolf, a fox. The highest level is tertiary consumers that eat carnivores, for example, a bear, an eagle.
        
             
        
        
        
Answer:
(B) None of the answers are true...
Explanation:
(A) is wrong because the high levels of epinephrine promote activation of sympathetic nervous system that'll ultimately increase oxygen consumption.
(C) Elevated temperatures of body require immediate cooling that's why breathing rate gets high and ultimately the oxygen consumption.
(D) We all know that a vigorous dose of exercise always increases your bodies oxygen consumption.
 
        
             
        
        
        
Answer:
ATP is produced most efficiently by structure C.(mitochondria)
 
        
             
        
        
        
100% (all living organisms of them have a rage of tolerance)
 
        
             
        
        
        
Answer:
thermal energy
insulator
Explanation:
i dont know if i have to choose only one or more