Answer:
oxygen, sulfur, selenium, tellurium, polonium, and ununhexium (O, S, Se, Te, Po, and Uuh, respectively)
Explanation:
i hope it helps all this are 6 valence from electron and form 2-iron.
 
        
             
        
        
        
Listing the similarities between Parasympathetic and Sympathetic Nervous Systems
Both are part of the Autonomic Nervous System of our body.
Both Sympathetic and Parasympathetic nerves are involved in involuntary functions of the body.
Both Sympathetic and Parasympathetic Divisions of the Autonomic Nervous System impact the physiological processes of the body. 
<h2><u><em>
brainlist please</em></u></h2>
 
        
             
        
        
        
Are there multliple choice, if so what are the answers and I can help you out
        
                    
             
        
        
        
Answer:
The frequency of the recessive allele which codes for grey pelt character will rise above 20%, while the that of the dominant allele that confers brown pelt character will decrease below 80%.
Explanation:
Since the population of foxes with brown pelts are being selectively hunted by humans, the population of foxes with brown pelts will keep reducing while the population of foxes with grey pelt will thrive in its place.
<em>Hence, the the frequency of the recessive allele which confers grey pelt attribute will rise above original 20% within the population, while the dominant allele will decrease below 80%.</em>
 
        
             
        
        
        
Answer:
A river basin or drainage basin is an area of land drained by a river and its tributaries. The edge of the drainage basin is known as the watershed. This can be compared to a sink or basin, which catches the water falling into it. The water travels towards the centre and leaves the sink through a plug hole.