What are the top three sources of active ingredients for pesticides?

The correct choice identifies the top three sources of active ingredients for pesticides as plants, minerals, and chemical labs.

Plants are a primary source of natural pesticides, as many botanical substances have been utilized for their pest-repelling and insecticidal properties. For example, compounds derived from plants like pyrethrins (from chrysanthemum flowers) are well-known for their effectiveness against a variety of pests.

Minerals also play a significant role, as certain inorganic substances have been found to have pesticidal properties. For example, diatomaceous earth, a naturally occurring sedimentary rock, is used against insects due to its abrasive properties that damage their exoskeletons.

Chemical labs produce synthetic pesticides that are designed to mimic or enhance the effects of natural substances, providing a broader spectrum of control against pests and potentially offering greater stability and effectiveness.

This selection provides a comprehensive view of the various sources contributing to the formulation of pesticides, highlighting both natural and synthetic approaches, which reflects the diversity of active ingredients used in pest management strategies.