This representates the temperature of F degrees Fahrenheit converted to degrees Celsius. Remember that in order to change temperature we need to use the following formula:  <span>from Fahrenheit to Celsius: first subtract 32, then multiply by 100/180</span>
        
                    
             
        
        
        
Your answer would be... B. The climate on Earth has changed over time.
        
             
        
        
        
Nearly all life on Earth ultimately gets its energy from the sun, which gets "its"energy through nuclear fusion. <span>With the exception of hydrogen, all of the chemical elements needed for life were produced by nuclear fusion of lighter elements, either in the cores of stars or in the shock waves of supernova explosions.</span>
        
                    
             
        
        
        
<span>In table or Excel, it's merging or combining. 
In biology, cells generally don't combine, they split (mother cells splits into two daughter cells)</span>
        
             
        
        
        
Answer:
Alpha particles are positively charged He nuclei. And the nucleus contains positive charged protons and neutral neutrons. On hitting the nucleus, due to similar charges, alpha particles repel away. (Like repels like)