Given the question: For other tree species with similar names see Algarrobo (disambiguation).Prosopis alba is a South American tree species that grows in central Argentina the Gran Chaco ecoregion and part of the Argentine Mesopotamia as well as Bolivia Paraguay and Peru. It is known as algarrobo blanco in Spanish which means white carob tree. Spanish settlers gave it that name because of its similarity to the European carob tree (Ceratonia siliqua). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer is:
Plant