The answer is letter A. 
Plants that are affected by climate change tend to have a growing and flowering season that starts very early and lasts longer than normal. This certainly puts an imbalance in the ecosystem which causes many environments to have a different stake of demand and supply for food for other primary and secondary consumers. The early onset of spring affects the plant's budding time which would then escalate to early development of fruits and later on will progress to a lack of supply when the need for that food arises for other organisms.
        
                    
             
        
        
        
Answer:
⬇️
Explanation:
Multiple allele means more than two forms of the same gene in the population and polygenic inheritance means more than one gene contributes to the phenotype of a trait.
Hope this helps 
 
        
             
        
        
        
Answer:
a nervous system, connecting to their brain which sends signals to move all the  parts around the body, for example, if you want to move your leg forward, your nervous system sends signals to it, same for other animals.
 
        
             
        
        
        
Ribose sugars
Cytosine
Thymine
Transfer RNA
Uracil
Ribosomal RNA
Nucleotides
Messenger RNA
        
             
        
        
        
Deoxyribose+phosphate group+polymerase can be found in DNA molecule.