True or False: Sulfur and arsenic were among the first elements used to control pests.

The assertion that sulfur and arsenic were among the first elements used to control pests is true. Historically, both sulfur and arsenic have been utilized in agricultural practices for pest control. Sulfur has been known for centuries as a fungicide and insecticide, effectively managing fungal diseases and certain pests. It is a natural element that has been used in various forms, such as sulfur dust and liquid formulations.

Arsenic, while more controversial due to its toxicity to humans and the environment, was also historically employed as a pesticide and herbicide. It was used particularly in the 19th century for controlling insect pests. However, the usage of arsenic has significantly declined due to the health risks it poses.

The statement accurately reflects the historical context of pest management practices where both sulfur and arsenic were among early chemical agents used by farmers. This underscores the long-standing relationship between elemental substances and pest control in agriculture.