Explanation:
a sequence of three nucleotides which together form a unit of genetic code in a DNA or RNA molecule.
 
        
                    
             
        
        
        
What organ integrates the brain nervous organs with the endocrine system? Hypothalamus
        
             
        
        
        
Answer:
A.the foundation of most food chains.During photosynthesis plants let out oxygen and gain carbon dioxide from the atmosphere which intern helps plants to manufacture food.
 
        
             
        
        
        
Cells are the basic unit of life and they are the 1st level of organization.  The heart is the 3rd level.  They are separated by 1 level, tissues.
        
             
        
        
        
The answer is 'sensory adaptation'. This happens when your sensory system senses a constant stimulus. After a short while, your sensory system will respond less, and then won't respond at all. This is to allow adaption to your environment. For example, if you live above a subway system, you will eventually become used to the sound of underground trains and vibration, and eventually you won't notice it at all..