Answer: endocrine glands release chemicals into the bloodstream
Explanation: GradPoint
 
        
             
        
        
        
The pyloric valve control food movement from the stomach into the small intestine.
        
             
        
        
        
Answer:
B
Explanation:
Birds and flowers have different arrangements of the bases.
Nucleotides are termed as organic molecules which serve as monomer units. Their work is to form nucleic acid polymers, for example, ribonucleic acid and deoxyribonucleic acid. 
They serve as biomolecules in the life-forms on earth. Nucleotides work as building blocks of nucleic acid. They are composed of the phosphate group, five-carbon sugar, and nitrogenous base.
 
        
             
        
        
        
Answer: plants
Explanation: it’s simple, photosynthesis
 
        
             
        
        
        
Answer:
Look in explanation
Explanation:
The sun provides energy to plants. The plants are eaten by herbivore/omnivores transferring the energy from the plant to the herbivore/omnivore, then the carnivore eats the herbivore/omnivore which gives the carnivore the energy