Due to a recent drought, a farmer has lost quite a bit of soil on his fields because

Rapid evaporation and absence of precipitation

Explanation:

Drought is considered to be one of the natural disaster as every year farmers had to face this problem. It occurs in a particular area due to the lack of precipitation and rapidly increasing temperature condition. It is characterized by a very dry type of climate where the moisture content is very low or absent. Due to drought, the soil becomes dry and there is an absence of organic materials and water content if present gets evaporated. Subsequently, the soil loses its fertility and is rapidly eroded away losing the essential materials by the action of wind.

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.