Answer:
In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.
Explanation:
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Answer: B- Over time, beneficial variations will be passed on to future generations
Explanation:
 
        
             
        
        
        
Answer:
Transpiration
Explanation:
Because water gets sucked into the plant roots and leaves as vapor
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