* Plants: A variety of plants can be grown in a terrarium, including mosses, ferns, air plants, and small succulents.
* Animals: Small invertebrates, such as snails, springtails, and isopods, can be added to a terrarium to help break down organic matter and add nutrients to the soil.
Aquarium
* Fish: A variety of fish can be kept in an aquarium, including tropical freshwater fish, saltwater fish, and coldwater fish.
* Plants: Aquatic plants can be added to an aquarium to provide oxygen, shelter, and food for the fish.
* Other animals: Invertebrates, such as shrimp, snails, and crabs, can also be kept in an aquarium.