When a farmer sprays crops with a pesticide, the pesticide becomes

When a farmer sprays crops with a pesticide, the pesticide becomes easily washed down into lakes and rivers. Pesticides are chemicals used to control pests, such as insects, weeds, and fungi, that can damage crops and reduce yields. When a pesticide is sprayed onto crops, some of it may remain on the surface of the plants or in the soil, while some may be carried away by rainwater and runoff into nearby bodies of water, such as lakes and rivers. This is known as pesticide runoff. Pesticide runoff can have harmful effects on aquatic organisms, such as fish and amphibians, as well as other wildlife that depend on these bodies of water. Pesticides can also accumulate in the food chain, with animals higher up the chain ingesting larger amounts of the chemicals than those at lower levels. In some cases, pesticides may even pose a risk to human health if they contaminate drinking water sources or are consumed through contaminated fish or other food products. The other options given are not correct. Pesticides are not poisonous to all plants, as some may be resistant to certain types of pesticides. Pesticides are not broken down by soil algae, but instead may be broken down by other microorganisms present in the soil. Finally, while some pesticides may be absorbed by the bodies of mammals, this is not the primary mode of transport for pesticides that are sprayed onto crops. Therefore, when a farmer sprays crops with a pesticide, the pesticide becomes easily washed down into lakes and rivers.