Answer: The answer is D. There Would be a general decrease in the Ultrviolet radiation experienced by Earth
Explanation: I took the Study Island quiz and i got it Correct
 
        
             
        
        
        
Answer:
The suprachiasmatic nuclei enable the nervous system to respond to daily light/dark alterations through their stimulation of melatonin.
Explanation:
Melatonin is a hormone produced naturally by the body. Its function is to regulate the body's circadian cycle. This hormone is stimulated and begins to act by changing between a light environment and a dark environment. This stimulation interacts with the suprachiasmatic nuclei making the nervous system understand this change and luminosity of the environment and respond to the action of melatonin.
 
        
             
        
        
        
Answer:
C
Explanation:
They turn into fossils! Please crown brainliest!
 
        
                    
             
        
        
        
Answer:
A. Whales evolved from four-legged animals.
Explanation:
I'm 100% on this one, because on Plato we were learning about evolution, and one of the slides said that whale had evolved from four legged animals. 
Hope this helps ya!!!
Got a screenshot for proof!