12) B. The organism would suffer as its cells would be less able to provide the energy needed to carry out life functions. 
13) D. The central vacuoles in the cells lose water and can no longer help support the cells. 
14) A. It acts as a framework inside the endoplasmic reticulum and keeps it from collapsing.
15) D. The cell's energy level will diminish as the enzyme decreases. 
16) C. Whales are able to conserve oxygen better than humans. 
17) A. Glycolysis  
18) i dont know this one but maybe B
19) B. It is turned into more chlorophyll for the plant. 
20) B. The chloroplasts would be unable to generate ATP. 
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Skin 
20 square feet on average person 
The epidermis , the dermis & subcutaneous tissue (hypodermis) 
 
        
             
        
        
        
Answer:
Carbohydrate, proteins, and lipids
Explanation:
<em>The organic molecules that can be derived from eating foods are carbohydrate, proteins, and lipids.</em>
<u>Carbohydrates are general derived from starchy foods such as grains, proteins are derived from eating of foods that are rich in proteins such as meat, milk, etc, while lipids are derived from eating fat/oil-based foods such as butter, avocados, etc.</u>
Nucleic acids are not derived directly from foods. They are monomers of proteins and hence, they are only derived from breaking down proteins.
 
        
             
        
        
        
1.Sunlight zone 
2.Twilight zone
3.Midnight Zone
4.Abyssal zone