| Term | Definition |
| Deciduous forest | there are zone, small tree and sapling zone, shrub zone, herb zone, and ground zone. |
| Ecological succession | a fundamental concept in ecology, refers to more-or-less predictable and orderly changes in the composition or structure of an ecological community. |
| Evolution | is the observed process of change in the species structure of an ecological community over time. |
| Indigenous | ethnic group of people who inhabit a geographic region, with which they have the earliest known historical connection. |
| Lichen | type of fungi. |
| Pioneer species | species which colonizes previously uncolonized land, usually leading to ecological succession. |
| Primary succesetion | is one of two types of ecological succession and biological succession of plant life |
| Niche | how a organism makes a living. |
| Tropism | usually a plant, in response to an environmental stimulus. |
| Biodiversity | is the variation of life forms within a given ecosystem. |
| Carnivore | An organism that eats other consumers. |
| Omnivore | An organism that eats only producers. |
| Producer | produces it own food. |
| Consumer | Does not make own food, eats other consumers or producers. |
| Omnivore | Eats both producers and other consumers. (Plants and animals) |
| Decomposer | Breaks down dead organisms into energy into soil |
| Biomass | as a renewable energy source, refers to living and recently dead biological |
| Ecology | is the scientific study of the distribution and abundance of life. |
| Chloroplast | Used in the prossess of photosynthesis. Used to make sugers for the plants food. |
| Carolus Linnaeus | He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology |