Answer:
Herbivores are tertiary consumers. Carnivores are primary consumers. Omnivores are also primary consumers. 
Explanation:
we got three types of consumers :
- primary consumers 
- secondary consumers 
- tertiary consumers 
 
        
             
        
        
        
the answer A, steroids ; separate the cytoplasm from the environment
        
             
        
        
        
Answer:
I think its chemical energy is not required because passive transport doesn't need energy at all
 
        
             
        
        
        
Answer:
How long the organism lived