Aesthetic value (n) the importance of the way something looks

Anadromous₁ (adj) fish that migrate between freshwater and saltwater

Amphibian tunnel (n) corridors in roads designed to allow amphibians to cross without getting hit by vehicles

Biotic potential₁ (n) maximum rate at which the population of a given species can increase when there are no limits on its rate of growth

Captive breeding (n) a process in which individuals are removed from their habitat and kept in captivity to breed (and increase population), then are released after reproduction

Chemical pesticide₁ (n) chemical substances used to subdue pests including insects and plants

Consumer demand₃ (n) willingness and ability of consumers to purchase a quantity of products in a given period of time, or at a given point in time

Decomposition (n) the process of natural decay, when organic substances break down into simpler matter

Ecological reserve₄ (n) an area of land that is protected and managed in order to preserve a particular type of habitat and its flora and fauna which are often rare or endangered

Ecotourism (n) tourism intended to support and conserve threatened natural environments

Environmental protection group (n) a non-profit group that is organized to help the environment

Extinct₁ (adj) the state of a species being completely nonexistent 

Extinction₁ (n) complete disappearance of a species from the earth, occurs when a new species cannot adapt and successfully reproduce under new environmental conditions or when a species evolves into one or more new species

Extract (v) to remove a species/individual from its habitat (in the process of captive breeding)

Food chain₁ (n) series of organisms in which each eats or decomposes the preceding one

Gene pool₁ (n) sum total of all genes found in the individuals of the population of a particular species

Genetic diversity₁ (n) variability in the genetic makeup among individuals within a single species

Hydrologically connected (adj) the state of two bodies of water being connected, and thereby influencing each other

Insecticide (n) a chemical substance used to kill insects

Intrinsic value (n) the true, inherent value of something

Land trust₅ (n) an organization that acquires land or conservation easements, or that stewards land or easements, for conservation purposes

Metapopulation₆ (n) a regional group of connected populations of a species

Migrate (v) to move from one habitat/ecosystem to another

Monocropping (n) the process of growing one crop, season after season, on the same land

Mosquito abatement₁ (n) the process of killing mosquitos

Nitrate fertilizer* (n) a compound of nitrogen and oxygen that, when added to plants, helps encourage growth

Nitrogen cycle (n) the process in which nitrogen is converted through multiple chemical forms as it circulates through the atmosphere, geosphere, and biosphere

Ozone Layer (n) the layer of earth's atmosphere that absorbs UV rays.

Predator₁ (n) organism that captures and feeds on some or all parts of another organism

Preservation site (n) location where a fragile habitat is being restored

Prey₁ (n) organism that is killed by another organism and serves as its source of nutrients and energy

Refuge₇ (n) an area designated for the protection of wild animals, within which hunting and fishing are either prohibited or strictly controlled

Salinity₁ (n) amount of various salts dissolved in a given volume of water

Sediment₈ (n)  solid material (rocks and minerals)  that is moved and deposited in a new location via erosion

Subpopulation (n) a specific portion or part of a larger population (example: SCLTS is a subpopulation of the Ambystoma macrodactylum family)

Tide gates₉ (n) an opening through which water may flow freely when the tide moves in one direction, but which closes automatically and prevents the water from flowing in the other direction.

Translocate (v) to move a species/individual to a protected location (in the process of captive breeding)

Urbanization₁ (n) creation or growth of urban areas, or cities, and their surrounding developed land

Wetland₁ (n) land that is covered all or part of the time with saltwater or freshwater