A would be your answer! Have a great day love! 
        
             
        
        
        
Answer:
homeostasis is in yourr endocrine system. its if your blood suger is too low or high. if its too high your cells will absorb glucose. if its too low, your cells will release glucose.
Explanation:
hope this helps luv! good luck!
 
        
                    
             
        
        
        
Answer:
It is true that one-toed horse of today steadily evolved from its five-toed ancestor.
Explanation:
- Evolution is the law of nature.There is a continuous process of evolution in each biological species in nature.
- Similarly, horses had 5 toes millions of year back, but according to the theory of gradualism their use decreased and toes started fusing.
- Now, its only one toe at present but the vestigial left over provides the solid evidence for the fact that horses had 5 toes in the past. 
 
        
             
        
        
        
Mangroves<span> provide a number valuable </span>ecosystem services<span> that contribute to human well being including provisioning, regulating ,and habitat.
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Answer:
https://phys.org/news/2009-05-bird-songs-environment.html
Explanation: