Final answer:
If a pesticide does not break down easily or quickly in the environment, it is said to have persistence. This can lead to bioaccumulation in organisms. Solubility is unrelated to persistence.
Step-by-step explanation:
If a pesticide does not break down easily or quickly in the environment, it is said to have persistence. This means that the pesticide remains in the environment for a long period of time without breaking down. This can have harmful effects on ecosystems as it can accumulate in organisms and lead to bioaccumulation. For example, pesticides like DDT are known for their persistence, which led to a build-up in the bodies of organisms like birds, causing problems in their reproduction and population size. On the other hand, solubility refers to the ability of a substance to dissolve in a solvent, which is not directly related to the pesticide's persistence in the environment.
Learn more about Pesticide persistence and bioaccumulation