Signal words and symbols help to describe which aspect of pesticides?

Signal words and symbols are essential components used on pesticide labels to indicate the level of toxicity associated with the product. These words and symbols provide crucial information about the potential health risks to humans, animals, and the environment if the pesticide is mishandled or improperly applied.

For example, signal words such as "Danger," "Warning," and "Caution" are used to categorize pesticides based on their toxicity levels. "Danger" signals highly toxic materials, while "Warning" indicates moderate toxicity, and "Caution" suggests lower risk. These designations help users make informed decisions about safe handling and application practices, ultimately promoting safety in pesticide use.

While usage, environmental impact, and application methods are also important aspects of pesticide management, they are not directly described or indicated by signal words and symbols on labels. The primary purpose of these labels is to communicate toxicity information effectively.