Yes when fossil fuels are burned they release the carbon dioxide locked inside of them 
that is why fossil fuels are a big source of global warming and we will eventually run out of fossil fuels 
        
                    
             
        
        
        
Answer:
a. Determine the allele frequencies of: 
f(T) = 0.485 ≅ 0.48
f(t) = 0.515 ≅ 0.52
b. Determine the genotype frequencies of the exposed generation
- F (TT) = 0.21
- F (Tt) = 0.55
- F (tt) = 0.24
the genotype frequencies of the next generation
- F(TT) = 0.23
- F(Tt) = 0.5
- F(tt) = 0.27
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
 
        
             
        
        
        
I do believe that it is both naturally occurring and caused by human activity. Although science has proven that it is something that naturally progresses with time, humans have sped up the process. Hope this helps:)
        
             
        
        
        
I would say presence of inorganic molecules I THINK not sure.