| Term | Definition |
| tropical rain forest | home to more species than all the other biomes combined |
| canopy | dense coveringextending from 50 to 80 meters above the forest floor |
| understory | second layer of shorter trees and vines |
| hot and wet year round, thin nutrient poor soil | Abiotic Factor of the Tropical Rain Forest |
| broad leaved evergreen trees, ferns, woody vines, climbing plants, orchids and bromelaids | Dominant Plants of the Tropical Rain Forest |
| sloths, jaguars, toucans, parrots, anacondas | Dominant Wildlife of the Tropical Rain Forest |
| South and Central America, Africa, India, Australia | Geographic Distribution of the Tropical Rain Forest |