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| 6365688123 | Chemical cycling | Continue cycling of the chemicals necessary for life through natural processes such as the water cycle and feeding interactions; processes that evolved due to the fact of the earth gets essentially no new inputs of these chemicals. | 0 | |
| 6365688124 | Natural capital | Natural resources and natural services that keep us and other species alive and support our economies | 1 | |
| 6365688125 | Natural services (ecosystem services) | Processes of nature, such as purification of air and water and pest control, which support life and human economies | 2 | |
| 6365688126 | Inexhaustible resource (perpetual) | Essentially inexhaustible resource on a human timescale because it is renewed continuously. Solar energy is an example | 3 | |
| 6365688127 | Renewable resource | Resource that can be replenished rapidly through natural processes as long as it is not used up faster than it is replaced | 4 | |
| 6365688128 | Exhaustible (nonrenewable) | Resource that exists in a fixed amount in the earth's crust and has the potential for renewal by geological, physical, and chemical processes taking place over hundreds of millions to billions of years | 5 | |
| 6365688129 | Environmental degradation | Depletion or destruction of a potentially renewable resources such as soil, grassland, forest, or wildlife that is used faster than it is naturally replenished | 6 | |
| 6365688131 | Point source | Single identifiable source the discharges pollutants into the environment | 7 | |
| 6365688132 | Nonpoint source | Broad and diffuse areas, rather than points, from which pollutants enter bodies of surface water or air | 8 | |
| 6365688133 | Pollution cleanup | Device or process that removes or reduces the level of a pollutant after it been produced or has entered into the environment | 9 | |
| 6365688134 | Pollution prevention | Device, process, or strategy used to prevent a potential pollutant from forming or entering the environment or to sharply reduce the amount entering the environment | 10 | |
| 6365688135 | Affluence | Well that results in higher levels of consumption and unnecessary waste of resources | 11 | |
| 6365688136 | Sustainability revolution | Major cultural change in which people learn how to reduce their ecological footprint and live more sustainably | 12 | |
| 6365688137 | Exponential growth | Growth in which some quantity increases at a constant rate per unit of time | 13 | |
| 6365688138 | Planetary management worldview | Worldview holding that humans are separate from nature, that nature exist mainly to meet our needs and increasing once, and that we can use our ingenuity and technology to manage the life-support systems, mostly for our benefit | 14 | |
| 6365688139 | Stewardship worldview | Worldview holding that we can manage the earth for a benefit but that we have an ethical responsibility to be caring and responsible managers or stewards of the earth | 15 | |
| 6365688140 | Environmental wisdom worldview | Worldview holding that humans are part of and totally dependent on nature in that nature exist for all species not just us | 16 | |
| 6365688141 | Natural income | Renewable resources such as plants, animals, and soil provided by natural capital | 17 | |
| 6365688142 | Tentative science (frontier science) | Preliminary scientific data, hypothesis, and models that have not been widely tested and excepted | 18 | |
| 6365688143 | Reliable science | Concepts and ideas that are widely excepted by experts in a particular field of the science or social sciences | 19 | |
| 6365688144 | Isotopes | Two or more forms of a chemical element that have the same number of protons but different mass numbers because they have different numbers of neutrons in their nuclei | 20 | |
| 6365688145 | Acidity | Chemical charactistics that help determine how a substance dissolved in water will interact with and affect its environment | 21 | |
| 6365688146 | Chemical change (reaction) | Interaction between chemicals in which the chemical composition of the elements or compounds involved changes | 22 | |
| 6365688147 | Electromagnetic radiation | Forms of kinetic energy traveling as electromagnetic waves | 23 | |
| 6365688148 | First law of thermodynamics | Whenever energy is converted from one form to another in a physical or chemical change, no energy is created or destroyed, but energy can be changed from one form to another | 24 | |
| 6365688149 | Second law of thermodynamics | Whenever energy is converted from one form to another in a physical or chemical change, we end up with lower dash quality, more disbursed, less useful energy, usually low-temperature heat that flows into the environment | 25 | |
| 6365688150 | Tipping point | Threshold level at which an environmental problem causes a fundamental and irreversible shift in the behavior of a system | 26 | |
| 6365688151 | Troposphere | Innermost layer of the atmosphere | 27 | |
| 6365688152 | Stratosphere | Second layer of the atmosphere | 28 | |
| 6365688153 | Net primary productivity | Rate at which all the plants in an ecosystem produce net useful chemical energy | 29 | |
| 6365688155 | Phosphorus cycle | Species that play roles affecting many other organisms in an ecosystem | 30 | |
| 6365688156 | Keystone species | Species who is decline serves as early warnings that a community or ecosystem is being degraded | 31 | |
| 6365688157 | Indicator species | Species that normally live and thrive in a particular ecosystem | 32 | |
| 6365688158 | Native species | Species that migrate into an ecosystem or deliberately or accidentally introduced into an ecosystem by humans | 33 | |
| 6365688159 | Nonnative species | Species that migrate into an ecosystem or deliberately or accidentally introduced into an ecosystem by humans | 34 | |
| 6365688160 | Resource partitioning | Process of dividing up resources in an ecosystem set species with similar needs use the same scarce resources at different times, in different ways, or in different places | 35 | |
| 6365688161 | Coevolution | Evolution in which two or more species interact and exert selective pressures on each other that can lead to each species to undergo adaptation | 36 | |
| 6365688162 | Parasitism | Interaction between species in which one organism, called the parasite, praise on another organism, called the host, by living on or in the host | 37 | |
| 6365688163 | Mutualism | Type of species interaction in which both participating species generally benefit | 38 | |
| 6365688164 | Commensalism | An interaction between organisms of different species that and which one type of organism benefits and the other type is neither helped nor harmed to any great degree | 39 | |
| 6365688165 | Inertia (persistence) | Ability of a living system such as a grassland or forced to survive moderate disturbances | 40 | |
| 6365688166 | Resilience | Ability of a living system such as the forest or pond to be restored through secondary ecological succession after severe disturbance | 41 | |
| 6365688167 | Range of tolerance | Range of chemical in physical conditions that must be maintained for populations of a particular species to stay alive and grow, develop, and function normally | 42 | |
| 6365688168 | Limiting factor principle | Too much or too little of any abiotic factor can limit or prevent growth of a population of a species in an ecosystem him, even if all the other factors are at or near the optimal range of tolerance for the species | 43 | |
| 6365688169 | Environmental resistance | All of the limiting factor is the active gather to limit the growth of a population | 44 | |
| 6365688170 | Cultural carrying capacity | The limit on population growth that would allow most people in an area or the world to live in reasonable comfort and freedom without impairing the ability of the planet to sustain future generations | 45 | |
| 6365688171 | Fertility rate | Number of children born to an average woman in a population during her lifetime | 46 | |
| 6365688172 | Crude birth rate | Annual number of live births per 1000 people in the population of a geographic area at the midpoint of a given year | 47 | |
| 6365688173 | Crude death rate | Annual number of deaths per 1000 people in the population of a geographic area at the midpoint of a given year | 48 | |
| 6365688174 | Expanding rapidly (age structure) | 49 | ||
| 6365688175 | Expanding slowly (age structure) | 50 | ||
| 6365688176 | Stable (age structure) | 51 | ||
| 6365688177 | Declining (age structure) | 52 | ||
| 6365688178 | Preindustrial | Population grows very slowly because of the high birth rate (to compensate for high infant mortality rate) and a high death rate. | 53 | |
| 6365688179 | Transitional | Population grows rapidly because birth rates are high and death rate drop because of improved food production and health. | 54 | |
| 6365688180 | Industrial | Population growth slows as both birth and death rates drop because of improved food production, health, and education. | 55 | |
| 6365688181 | Postindustrial | Population growth levels off and then declines as birthrates equal and then fall below death rates. | 56 | |
| 6365688182 | Rain shadow effect | Low precipitation on the Leeward side of a mountain when prevailing winds floor up and over a high mountain or range of high mountains, creating semi arid and aired conditions on the Leeward side of a high mountain range | 57 | |
| 6365688183 | Plankton | 58 | ||
| 6365688184 | Nekton | 59 | ||
| 6365688185 | Benthos | 60 | ||
| 6365688186 | Decomposers | 61 | ||
| 6365688187 | Turbidity | 62 | ||
| 6365688188 | Estuary | 63 | ||
| 6365688189 | Ocean acidification | 64 | ||
| 6365688190 | Watershed (drainage basin) | 65 | ||
| 6365688191 | Oligotrophic lake | 66 | ||
| 6365688192 | Eutrophic lake | 67 | ||
| 6365688193 | Cultural eutrophication | 68 | ||
| 6365688194 | Mesotrophic lake | 69 | ||
| 6365688195 | Biological extinction | 70 | ||
| 6365688196 | Background extinction rate | 71 | ||
| 6365688197 | HIPPCO | Habitat destruction, degradation, and fragmentation; Invasive species; Population growth and increasing use of resources; Pollution; Climate change; Overexploitation | 72 | |
| 6365688198 | Habitat fragmentation | 73 | ||
| 6365688199 | Precautionary principle | 74 | ||
| 6365688200 | Rangelands | 75 | ||
| 6365688201 | Biodiversity hotspots | 76 | ||
| 6365688202 | Ecological restoration | 77 | ||
| 6365688203 | Chronic undernutrition (hunger) | 78 | ||
| 6365688204 | Chronic malnutrition | 79 | ||
| 6365688205 | Industrialized agriculture | 80 | ||
| 6365688206 | Traditional subsistence agriculture | 81 | ||
| 6365688207 | Traditional intensive agriculture | 82 | ||
| 6365688208 | Polyculture | 83 | ||
| 6365688209 | Organic agriculture | 84 | ||
| 6365688210 | Green revolution | 85 | ||
| 6365688211 | Soil erosion | 86 | ||
| 6365688212 | Desertification | 87 | ||
| 6365688213 | Waterlogging | 88 | ||
| 6365688214 | Agrobiodiversity | 89 | ||
| 6365688215 | Integrated pest management | 90 | ||
| 6365688216 | Soil conservation | 91 | ||
| 6365688217 | Asthenosphere | 92 | ||
| 6365688218 | Sedimentary rock | 93 | ||
| 6365688219 | Igneous rock | 94 | ||
| 6365688220 | Metamorphic rock | 95 | ||
| 6365688221 | Overburden | 96 | ||
| 6365688222 | Spoils | 97 | ||
| 6365688364 | Open-pit mining | 98 | ||
| 6365688365 | Strip mining | 99 | ||
| 6365688366 | Area strip mining | 100 | ||
| 6365688367 | Contour strip mining | 101 | ||
| 6365688368 | Surface mining | 102 | ||
| 6365688369 | Mountaintop removal | 103 | ||
| 6365688370 | Subsurface mining | 104 | ||
| 6365688371 | Tailings | 105 | ||
| 6365688372 | Crude oil (petroleum) | 106 | ||
| 6365688373 | Peak production | 107 | ||
| 6365688374 | Refining | 108 | ||
| 6365688375 | Petrochemicals | 109 | ||
| 6365688376 | Tar sands (oil sands) | 110 | ||
| 6365688377 | Liquefied petroleum gas (LPG) | 111 | ||
| 6365688378 | Liquefied natural gas (LNG) | 112 | ||
| 6365688379 | Synthetic natural gas (SNG) | 113 | ||
| 6365688380 | Nuclear fuel cycle | 114 |
