The document discusses different types of human population movements. It defines and compares key terms: - Immigration refers to permanently moving to another country, while migration is a more general term that can be temporary. - Asylum seekers apply for protection in a new country, and may become refugees if granted status. Refugees are forced to flee threats in their home country. - Migrants usually move for better opportunities, while refugees flee threats and conflict. Refugees lack legal protections if they enter countries illegally. - The main similarity between immigrants and refugees is that they both relocate from their home country, and may become citizens of their new country. - Internally displaced persons (