hydrocarbon deposit
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nonrenewable energy
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nonrenewable fuel source
        
                    
             
        
        
        
Chordates, or members of phylum Chordata, possess a backbone. 
        
                    
             
        
        
        
Answer:
Things they have in common..
Explanation:
- Non living things and living things are made up of matter.
- Both occupy space
- The also have weight,colour,shape etc
- Both Non living and living things are characterized by their type..
 
        
             
        
        
        
Answer:
Thus, the minimum number of photons per second is 77.34
Explanation:
Light intensity,  =
 =  
Pupil has a diameter, d = 8.5 mm 
                                       = 8.5 x  m
 m 
Radius of the eye, r = 4.25 x  m
 m
∴ Area of the eye, A = 
                                  = 
                                 = 
Let  be the minimum number of photons.
 be the minimum number of photons.
Therefore,  =
 =  x A
 x A
                                               =  x
 x 
                                              =  W
 W
Thus the minimum number of photons is given by 

where E = 
              = 
             = 
Therefore,  =
 = 
                                               = 77.34 photons per second
Thus, the minimum number of photons per second is 77.34