Protect Def: To guard a certain type of species that might be endangered, threatened, or need special concern. Biodiversity Def: The number and variety of organisms and species found in a certain and specific area or region, this includes the number and variety of many different ecosystems within and beyond that region. . Community Def: All of the populations a variety and many different species that interact within an area or ecosystem. E.g. A forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a community. Biodiversity Hotspot Def: An area or ecosystem where there is an enormously large number of species in a relatively small area. Dominant Species: Def: Species that are high in number and contain the highest biomass of any community member. Keystone Species Def: Species that play a huge role in an ecosystem, because they can greatly affect population numbers and the overall health of the ecosystem. Captive Breeding Def: The breeding of endangered or rare species in a controlled setting to help increase population. Ecosystem Engineer Def: A species that can cause dramatic changes to the landscapes so much so that it ends up creating a brand new ecosystem entirely.  E.g. A beaver makes dams which makes changes to the landscape and makes an ecosystem and a habitat for animals like frogs and toads. Succession  Def: A series of changes that occurs over a period of time, followed by a disturbance. Habitat Loss Def: The loss of a habitat caused by destruction, often caused by humans. E.g. Trees and forests being cut down by humans (logging) forcing many different wildlife to lose their habitat, panda`s losing habitat (bamboo). Deforestation Def: The act of cutting and cleaning out forests for human use and never restoring or replanting them. Alien Species Def: A species that is either accidentally or intentionally introduced to a foreign ecosystem or a new location. E.g Asian ladybugs, zebra mussels Invasive Species Def: A species that takes  over the habitat of the native species. E.g. Asian beetle Overexploitation Def: The heavy use or extraction of a resource until it is completely depleted. Extinction Def: The death of every single individual of a species, often caused by humans. E.g. The Dodo bird, Passenger Pigeon, Dinosaurs, Tasmanian Tiger. Biodiversity Crisis Def: The current accelerated rate of extinction of species. Restoration Ecology Def: The renewal of degraded or destroyed ecosystems through active human intervention and action. Biocontrol Def: Control of pests by disrupting their ecological status, through the use of other organisms that are their natural predators, parasites, or pathogens. Reforestation Def: The process of planting new trees in areas where they have been removed by cutting or destroyed by fire, disease, etc. Bioremediation Def: The process of using living organisms to clean up contaminated area in a natural way. Bioaugmentation Def: The use of organisms to add essential nutrients to depleted soils to respond to process fluctuations or to degrade certain compounds, resulting in improved treatment.