They develop into the cell wall and cell membrane
        
             
        
        
        
Answer:
True
Explanation:
because it can be a limiting factor in an ecosystem
 
        
             
        
        
        
Answer:
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
Explanation:
Hope this helps c:
 
        
                    
             
        
        
        
Answer:
They are caused by an increase in global temperatures
Explanation:
Global warming will cause a change in the weather patterns of a region – called climate change. A place could experience extreme weather such  as increased dryness or wetness.  This is mainly due to takeup of this heat by the oceans hence influencing global currents. 
As the oceans become warmer, they are able to absorb more carbon dioxide from the atmosphere. This causes these water to have a higher acidity than normal because of the formation of carbonic acid. 
 
        
             
        
        
        
C!! i had this question before . energy decreases at top