1.) To make energy and food 
2.) The chloroplast 
        
             
        
        
        
Answer:
The biosphere is made up of the parts of Earth where life exists. 
They are composed of living organisms and the abiotic  factors
Explanation:
So B is correct :)
 
        
                    
             
        
        
        
CHromosom is mado chromatids. Chromatids have a lot of thriplets inside. Every thriplet is one gene. Allele is also different variant of gene