Final answer:
The Nearctic ecozone includes the United States.
Step-by-step explanation:
The **Nearctic** ecozone includes the United States. The Nearctic ecozone is one of the eight ecozones defined by the World Wildlife Fund (WWF) based on major continental areas. It encompasses most of North America, including the United States, Canada, and parts of Mexico.
Learn more about Ecozones including the United States