Give an example to illustrate that indiscriminate use of pesticides may result in the degradation of the environment.

An example of environmental degradation due to the indiscriminate use of pesticides is Biological Magnification. When non-biodegradable pesticides like $DDT$ are sprayed on crops, they are washed into the soil or water bodies. These chemicals are absorbed by plants or aquatic organisms and enter the food chain. Since these chemicals cannot be metabolized or excreted, their concentration increases progressively at each successive trophic level. For instance, high concentrations of pesticides in birds of prey can lead to the thinning of eggshells, causing a decline in their population.