During times of poverty or famine, people are often faced with a shortage of food. maxwell is studying how the energy in food is transferred from one trophic level to another in a food pyramid. he learns that by decreasing the number of trophic levels in a food pyramid, less energy is lost to the environment as heat. maxwell concludes that in times of food shortage humans should replace the in their diets with in order to decrease the number of trophic levels in their food pyramid.

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1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.