| A | B |
| Carrying Capacity | Largest number of individuals of a given species that Earth’s resources can support and maintain for a long period of time |
| Population | All the members of a species living in a given area |
| Resources | Natural source of supply or support |
| Deforestation | Removal of large areas of forest for human purposes |
| Desertification | Development of desertlike conditions due to human activities and/or climate change |
| Reclamation | The process of restoring land disturbed by mining |
| Reforestation | Planting trees to replace trees that have been cut or burned |
| Runoff | Portion of precipitation that moves over land and eventually reaches streams, rivers, lakes, and oceans |
| Urban Sprawl | Development of land near a city to build houses and other buildings |
| Nonpoint-Source Pollution | Type of pollution that results from several widespread sources that cannot be traced back to a single location |
| Point Source Pollution | Type of pollution that can be identified from one source |
| Acid Rain | Rain or snow that has a lower pH than that of normal rainwater |
| Air Quality Index | (AQI) Scale that ranks levels of ozone and other air pollutants |
| Global Warming | Increase in Earth’s average surface temperature |
| Greenhouse Effect | Natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the Sun |
| Particulate Matter | Mix of solid and liquid particles in the air, including smoke, dust, and dirt |
| Photochemical Smog | type of air pollution that occurs when nitrogen and carbon compounds, released by the burning of fossil Fuels, react to sunlight |
| Bioindicator | Organism that is sensitive to environmental conditions and one of the first to respond to changes |
| Nitrate | Nitrogen based compound often used in fertilizers |
| Remote Sensing | Collection of data from a distance |
| Turbidity | Measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants |
| Water Quality | Chemical, biological, and physical status of a body of water |