A.)Well–developed vascular system
Vascular plants help maintain the water cycle. The property of these plants
enables them to carry out this function is their well-developed vascular system.
These type of plants are more evolved and developed than nonvascular plants
because of its specialized characteristics like xylem, which is a tissue that
is responsible for its framework and not only that, it is also has a greater mechanism
for water transference. Another is phloem, which is responsible for food
conduction.
        
             
        
        
        
Answer:
atomic number or atomic mass 
 
        
                    
             
        
        
        
The tympanic membrane is a patch of skin behind a frog's ear that allows it to hear on land and underwater
So basically, it's like an eardrum for a frog 
Hope this helps
-Maranda
        
             
        
        
        
Answer:Rhythm 
Explanation:
This is because rhythms are repetitive, cyclical patterns of behavior generally. For example waking, eating are examples of rhythm for a baby.