Answer:
Lipids and Proteins are considered micro molecules
 
        
             
        
        
        
<span>This is due to the higher forces needed to pump blood through the systemic circuit (around the body) compared to the pulmonary circuit.</span>
        
             
        
        
        
Answer:
Dissolved oxygen concentrations are constantly affected by diffusion and aeration, photosynthesis, respiration and decomposition. While water equilibrates toward 100% air saturation, dissolved oxygen levels will also fluctuate with temperature, salinity and pressure changes ³.
Explanation:
 
        
                    
             
        
        
        
<span>Unlike herbivores, carnivores rely chiefly on the flesh of other animals, and do not eat plants. Carnivores obtain nutrition as well as energy from animal tissue, by scaneging or predation. They are positioned at the top of the food chain, and are called as apex predators.</span>