1. Protista: This kingdom includes a diverse group of single-celled and multicellular organisms that are not classified as animals, plants, or fungi. Examples include algae, amoebas, and slime molds.
2. Plantae: This kingdom encompasses all plants, which are multicellular, photosynthetic organisms. Examples include trees, flowers, ferns, and mosses.
3. Animalia: This kingdom consists of all animals, which are multicellular, heterotrophic organisms. Examples include mammals, birds, reptiles, amphibians, fish, and insects.
4. Fungi: This kingdom includes all fungi, which are heterotrophic organisms that obtain nutrients by absorbing them from their environment. Examples include mushrooms, molds, and yeasts.
