Answer:
Rods
Explanation:
Rods are specialized photoreceptors that function best in low-light conditions. They are a major part of our vision in dimly lit environments, as well as our perception of movement in our peripheral vision.
 
        
             
        
        
        
Explanation:
Water is the most abundant substance in the body. An average healthy adult is 45 to 75 percent water. Percent of water declines with age. Males have more body water than females.
 
        
             
        
        
        
The answer is d x10 magnification
        
             
        
        
        
During a controlled experiment, a scientist will isolate and test (D) a single variable. A conclusion, nor a mass of information can be isolated or tested. A control group is the group that would receive a placebo, so testing that would be futile.
        
             
        
        
        
B. Photosynthesis/Cellular respiration releases energy stored in food and produces carbon dioxide and water