Which of the following is a characteristic of Organochlorine pesticides?

Organochlorine pesticides are known for their persistence in the environment due to their chemical structure, which allows them to resist degradation. This means that once applied, they can remain in the soil and water for extended periods, leading to long-term residues that can affect ecosystems and non-target species. This characteristic poses environmental concerns, as the accumulation of these chemicals can disrupt local habitats and contaminate food sources.

The other options do not align with the known characteristics of Organochlorine pesticides. For instance, they are not known for quick degradation, nor are they specifically favored for controlling insects on crops in modern agricultural practices due to their persistence and toxicity concerns. Additionally, Organochlorines are not considered less toxic to humans; in fact, many are recognized for their potential health risks, which has led to restrictions on their use in various regions.