| A | B |
| recycling | collectin and reprocessing a resource or product to make into new products |
| regulation | a rule or order issued by an executive authority or regulatory agency of a government and having the force of law |
| renewable | a naturally occurring raw material or form of energy that will be replenished through natural ecological cycles or sound management practices (the sun, wind, water, trees) |
| risk management | a strategy developed to reduce or control the chance of harm or loss to one's health or life; the process of identifying, evaluating, selecting and implementing actions to reduce risk to human health and to ecosystems |
| scale | relates concepts and ideas to one another by some measurement (quantitative, numeral, abstract, ideological) provides a measure of size and/or incremental change |
| science | search for understanding the natural world using inquiry and experimentation |
| shredder | through chewing and/or grinding, microorganisms feed on non-woody coarse particulate matter, primarily leaves |
| stream order | energy and nutrient flow that increases as water moves toward the oceans (the smallest stream(primary)that ends when rivers flow into oceans) |
| succession | the series of changes that occur in an ecosystem with the passing of time |
| sustainability | the ability to keep in existence or maintain. a sustainable ecosystem is one that can be maintained |
| system | a group of related objects that have feedback and can modify themselves |
| closed loop system | a group of related objects that have feedback and can modify themselves |
| open loop system | a group of related objects that do not have feedback and cannot modify themselves |
| subsystem | a group of related objects that make up a larger system (automobiles have electrical systems, fuel systems) |
| technological design process | recognizing the problem, proposing a solution, implementing the solution, evaluating the solution and communicating the problem, design and solution |
| technology education | the application of tools, materials, processes and systems to solve problems and extend human capabilities |
| theory of evolution | a theory that the vaious types of animals and plants have their origin in other preexisting types and that the distinguishable differrences are due to modification in successive generations |
| theory | systematically organized knowledge applicable in a relatively wide variety of circumstances; especially, a system of assumptions, accepted principles and rules of procedure devised to analyze, predict or otherwise explain the nature or behavior of a specified set of phenomena |
| tool | any device used to extend human capability including computer-based tools |
| topographic map | a representation of a region on a sufficient scale to show detail, selected man-made and natural features of a portion of the land surface including its relief and certain physical and cultural features; the portrayal of the position, relation, size, shape and elevation of the area |
| transportation systems | a group of related parts that function together to perform a major task in any form of transportation |
| transportation technology | the physical ways humans move materials, goods and people |
| trophic levels | the role of an organism in nutrient and energy flow within an ecosystem (herbivore, carnivore, decomposer) |
| waste stream | the flow of (waste) materials from generation, collection and separation to disposal |
| watershed | the land area from which surface runoff drains into a stream, channel, lake, reservoir or other body of water; also called a drainage basin |
| wetlands | lands where water saturation is the dominant factor determining the nature of the soil development and the plant and animal communities (sloughs, estuaries, marshes) |