A more thorough explanation:

Definition: APHIS is an abbreviation for Animal and Plant Health Inspection Service. It is a government agency responsible for protecting the health of animals and plants in the United States.

Example: APHIS works to prevent the spread of diseases in animals, such as avian influenza in poultry or foot-and-mouth disease in livestock. They also regulate the import and export of plants to prevent the introduction of invasive species that could harm native plants.

Explanation: The example shows how APHIS works to protect the health of animals and plants in the United States. By preventing the spread of diseases and regulating the import and export of plants, they help to ensure that our food supply is safe and that our natural ecosystems are protected.