No they don't
For example humans. Technically humans are place below a wild predators such as sharks in trophic levels.
But the fact is we can eat sharks. So , organisms don't always stay in the same level
        
             
        
        
        
Answer:
I believe the correct answer is  both involve proteins in the cell membrane. 
Explanation:
This is because Facilitated diffusion does not require any energy to transport molecules, while Active transport requires ATP. Facilitated diffusion transports molecules from an area of higher concentration to an area of lower concentration (or down a concentration gradient). Active transport moves molecules from an area of lower concentration to an area of higher concentration (or up a concentration gradient). Answer choice A is the only choice that makes sense.
Hope this helps, 
♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥
 
        
             
        
        
        
Some species cell division produces reproductive cells in sexually reproduce organisms
        
                    
             
        
        
        
Low blood pressure on the other hand can be to do with:
Exercise and how much you do of it because regular exercise keeps blood pressure low.
Eating as after you eat, blood pressure falls.<span><span>
Stress causes blood pressure to rise.
Body temperature and how high it is affects BP because if you're body temperature is high, your BP is usually low.
Hope that helps.
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<span>Reptiles that live on land convert the ammonia in their unrine to uric acid, which is much less toxic , so it doesn't need to be diluted as much. Also excess water is absorbed in the cloaca, reducing the urine to a paste and conserving water.</span>