Answer: Option B) determine the sequence of amino acids in a protein
Explanation:
The messenger RNA (mRNA) molecule carries a seqence of bases that is complimentary to the template strand of DNA. 
Hence, instead of thymine, uracil nucleotides exists in the mRNA molecule; while the mRNA is transcribed to the corresponding amino acids. 
For instance: a template strand of ACC CGG is transcibed as UGG GCC on mRNA, and translated to an amino acid sequence of Tryptophan and Alanine.
 
        
             
        
        
        
Answer:
I believe the answer is A) energy pyramid
Explanation:
It's talking about trophic levels, as opposed to individual organisms.
 
        
                    
             
        
        
        
A small amount of fat is an essential part of a healthy, balanced diet. Fat is a source of essential fatty acids, which the body can't make itself. Fat helps the body absorb vitamins A, D and E. These vitamins are fat-soluble, meaning they can only be absorbed with the help of fats.
-Jen
 
        
                    
             
        
        
        
Answer; 
A. Movement in his lower extremities
Explanation; 
-The 1st lumbar vertebra or the L1 vertebra is the smallest and most superior of the lumbar vertebrae. As the first vertebra in the lumbar region, the L1 vertebra bears the weight of the upper body and acts as a transition between the thoracic and lumbar vertebrae.
-The lumbar vertebrae contain spinal cord tissue and nerves which control communication between the brain and the legs.
 
        
                    
             
        
        
        
I am guessing an Ecological Relationship as it is dependent on it's environment