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Answer:Macromolecules
A	B
elements found in carbohydrates and lipids	carbon, hydrogen, oxygen
lipids have less of this element than carbohydrates	oxygen
element found in all organic compounds	carbon
element found in proteins but not carbohydrates or lipids	nitrogen
Explanation: 
 
        
             
        
        
        
A Triassic extinction is a  boundary between the Triassic<span> and Jurassic periods, 201.3 million years ago, and is one of the major </span>extinction<span>events of the Phanerozoic eon, profoundly affecting life on land and in the oceans.</span>