Explain the difference among extinct, extirpated, endangered, and threatened species of wildlife.

Explanation should include

• definitions of extinct, extirpated, endangered, and threatened
• the criteria and process of listing species into each of these categories
• examples of species in each category.

Process/Skill Questions:

• What are the requirements for an animal species to be listed as extinct, endangered, or threatened?
• How are animals removed from these lists?
• What population successes have occurred based on this process?