Bats are the only other species that can fly<span />
        
                    
             
        
        
        
Answer:
The lower pressure balloon will expand. Figure 2 (above left) shows a typical initial configuration: the smaller balloon has the higher pressure. So, when the valve is opened, the smaller balloon pushes air into the larger balloon. It becomes smaller, and the larger balloon becomes larger.
Hope this is helps out
Explanation:
 
        
             
        
        
        
Answer:
i willl answer this science question in the comments section
Explanation:
 
        
             
        
        
        
Answer:
1. B
2. B
3. A
4. B
Explanation:
1. Species is smaller than kingdom, and domain isn't a group
2. Its kinda obvious
3. Not too sure on this one, but i think a is right 
4. Pro means 'before nucleus', therefore it has no nucleus
 
        
             
        
        
        
Explanation:
The middle ear is an air-filled cavity that sits between the tympanic membrane and the inner ear. The middle ear also consists of three tiny bones called ossicles , the round window, the oval window , and the Eustachian tube .