| A | B |
|---|
| Environmental Science | The study of how humans interact with the environment. |
| Environment | The surroundings of an organism that affects its life and development. |
| Natural Resource | Any natural substance that humans use, such as sunlight, soil, water, plants, and animals. |
| Nonrenewable Resources | Resources that can be used up faster than they can be replenished naturally, such as coal, oil, and natural gas. |
| Renewable Resources | Abundant natural resources that are continually produced, such as trees and sunlight. |
| Biosphere | The layer around the Earth in which life occurs naturally, extending from about 8 km above the Earth to the deepest part of the ocean, which is about 8 km deep. |
| Developed Countries | Highly industrialized countries with high incomes and high standards of living. |
| Developing Countries | Less industrialized countries in which the average income and standard of living are low. |
| Population Crisis | Situation in which the number of people grows so quickly that a region cannot support them. |
| Consumption Crisis | Situation in which natural resources are being used up, wasted, or polluted faster than they can be renewed, replaced, or cleaned up. |
| Sustainable World | World in which human populations can continue can exist indefinitely with a high standard of living and health. |
| Pure Science | Study and activity that seek answers to questions about how the world works. |
| Applied Science | Study and activity that uses information provided by pure science to solve problems. |
| Ecology | The study of how living things interact with each other and with their nonliving environments. |
| Hypothesis | A testable explanation for a specific problem or question, based on what has already been learned. |
| Experiment | Activity designed to test a hypothesis under controlled conditions. |
| Biome | Regions that have distinctive climates and organisms and contain many separate but similar ecosystems. |
| Aerosol | A liquid substance under pressure within a metal container. |
| Fallout | The descent of minute particles of radioacitive material or debris after a nuclear explosion; an incidental result of side effect. |
| Habitat | Place where an organism lives. |
| Inversion | The act of inverting or the state of being inverted. |
| Limnology | The scientific study of bodies of fresh wter, as lakes and ponds, with reference to their physical, geographical, biological, and other features. |
| Phenology | The science dealing with the influence of climate on the recurrence of such annual phenomena of animal and plant life as budding and bird migrations. |
| Acclimatization | The physiological adaptation of an animal or plant to changes in climate of environment, such as light, temperature, or altitude. |
| Terrestrial | Of or relating to the Earth / land. |
