Answer:
dont really got an answer for that
 
        
             
        
        
        
Answer:
D i belive, if i'm worng, please don't be mean about it
Explanation:
 
        
             
        
        
        
Changes in the amount of sea ice can disrupt normal ocean circulation, thereby leading to changes in global climate. Even a small increase in temperature can lead to greater warming over time, making the polar regions the most sensitive areas to climate change on Earth
        
             
        
        
        
Yes, the pterosaurs is the ancestor of the bird.