Ye because ur looking at a grossly bear very scary and also it can bite u so hard that ur brain is gonna splatter everywhere into tiny bits of chunks
        
             
        
        
        
Answer:
i dont rlly get what ur asking but basically gasses diffues across the cell membrane from high conc to low concentration.
i dont know what passive transport is but active transport goes against the concentration gradient so im guessing passive is the opposite and goes with the conc gradient
Explanation:
 
        
             
        
        
        
i chose 2 4 and 5 on my test. let me know if im any help
 
        
                    
             
        
        
        
Answer:
Ecology is the study of ecosystems.
Explanation: