| A | B |
| Batesian Mimicry | A harmless species looks like a species that is poisonous |
| Cryptic Coloration | Camouflage |
| Dominant Species | Species with the highest abundance or biomass |
| Ecological Succession | Establishment of a biological community in area virtually barren of life |
| Ectoparasites | Parasites that feed externally on the host |
| Endoparasites | Parasites that live within a host |
| Herbivory | Consumption of plant material by an herbivore |
| Heterogenity | Measurement of biological diversity based of richness and abundance |
| Interspecific Competition | Competition for resources in short supply |
| Keystone Species | Species that aren't abundant in a community but exert strong control on it's stu\ructure |
| Mullerian Mimicry | Mutual mimicry by two unplatable species |
| Primary Succession | Succession where there were no original inhabitants and soil has yet to form |
| Resource Partitioning | Mechanism that increases the number of niches by apportioning the supply of a resource |
| Secondary Succession | Succession where an existing community has be disturbed where soil is still intact |
| Species Richness | The number of species in a biological community |
| Species Area-Curve | Biodiversity pattern noting the larger area we sample the greater number of species |
| Trophic Level | Feeding level of one or more populations in a food web |
| Trophic Structure | Feeding relationships in an ecosystem that determine energy flow and the pattern of chemical cycling |