All you would have to do is sum them up cause their going the same direction.
        
                    
             
        
        
        
Answer:
Mitochondria are visible under the light microscope although little detail can be seen. Transmission electron microscopy (left) shows the complex internal membrane structure of mitochondria, and electron tomography (right) gives a three-dimensional view.
Explanation:
 
        
             
        
        
        
<span>Collin often experiences a "runner's high" during his daily three-mile run. this is most likely produced by endorphins.
Endorphins are related to a group of hormones which are secreted within the brain and the nervous system, it is like morphine chemicals which are produced. It is mostly produced when you exercise a lot, run high or stress etc.</span>
        
             
        
        
        
neurotransmitters is the answer
 
        
             
        
        
        
Answer: Ectotherm
Definition: An animal that is dependent on <u>external sources of body heat</u>.