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Biodiversity
| Term | Definition |
|---|---|
| biodiversity | the variety of life on earth, reflected in the variety of ecosystems and species, their processes and interactions and the genetic variation within and among species. |
| biosphere | the part of the earth and its atmosphere where living things exist. |
| class | a taxonomic category that ranks below phylum and above order. |
| classification | grouping organisms into categories based on shared characteristics or traits. |
| ecological processes | relationships between organisms and their environments. |
| ecological sucession | The gradual change in an ecosystem that occurs as communities slowly replace one another |
| economics | science that deals with the production, distribution and consumption of goods. |
| ecoregion | a relatively large unit of land that is characterized by a distinctive climate, ecological features and plant and animal communities. |
| ecosystem | a community of organisms that are linked by energy and nutrient flows and that interact with each other and with the physical environment. |
| endangered species | a species threatened with extinction |
| endangered species act | Legislation enacted to ensure the survival of endangered plant and animal species; habitats critical to their survival may be protected. |
| extinct | a species that no longer exists |
| gene | a segment of DNA that includes the coded information in an organism’s cells that makes each species and individual unique |
| genetic diversity | the genetic variation present in a population or species |
| genus | a taxonomic category that ranks below family and above species |
| habitat | the area where an organism lives and finds the nutrients, water, sunlight, shelter, living space, and other essentials that it needs to survive. |
| habitat loss | the destruction, degradation, and fragmentation of habitats; primary cause of biodiversity loss |
| immigration | to move into another area |
| introducted species | and organisms that has been brought into an area where it does not occur naturally. |
| invasive species | an organism that has been brought into or spread into an area where it does not occur naturally |
| kingdom | one of the main taxonomic divisions into which natural organisms and objects are classified |
| migration | the movement of animals in response to seasonal changes or changes in the food supply |
| native species | a species that occurs naturally in an area or habitat |
| order | a taxonomic category that ranks below class and above family |
| organsim | a living thing |
| over consumption | the use of resources at a rate that exceeds the ability of natural processes to replace them. |
Created by:
estelavalladares
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