| PDO | | warm phase of ENSO in Pacific Ocean in which surface-water temperature becomes unusually warm |
| conduction | | krill eat a small amount of DDT; small fish eat many krill increasing the DDT in the small fish; DDT is greatest at the level of a bird eating a large fish |
| selective cutting | | cutting down only mature or dying trees |
| prevailing winds | | water that is drinkable |
| infrastructure | | area of open land often used for farming |
| aquaculture | | land that can be farmed |
| mesosphere | | layer of the thermosphere where ions can emit photons of light known as aurora borealis or australias |
| bedrock | | when atoms fuse together |
| biomagnification | | movement of warmth by wind |
| Chernobyl | | long-term Pacific Ocean change in warm and cold water masses; occurs 20-30 years |
| desertification | | winds that blow predominantly in one direction |
| compost | | distance north and south of equator; seasons and daylight change further from the equator |
| stratosphere | | accumulation of salts in soil; problem in California |
| latitude | | this describes a crop that can be produced in a large amount with little negative impact on the environment |
| convection | | problem in Haiti due to too many trees being cut down than can be replaced |
| topsoil | | site of world's worst nuclear reactor accident in the Ukraine in 1986 |
| permeability | | warming of the surface and lower atmosphere of Earth that occurs when carbon dioxide, water vapor, and other gases absorb UV rays |
| electric generator | | this group of people were hurt during the green revolution because they couldn't keep up with the new technology of farming |
| domesticated | | layer of solid rock |
| rural | | human activity or climate change make arid (dry) areas more desert-like; this happened to Lake Chad |
| nuclear fusion | | converts mechanical energy into electrical energy |
| rain shadow | | last true layer of the atmosphere where both ions and satellites are (distinguished in two recognized layers) |
| nuclear fission | | a multitude of people move into cities because more jobs are there |
| arable | | when rain occurs on one side of the mountain but not the other |
| subsistence farmers | | coldest layer of the ozone |
| green revolution | | area in which water travels downward to add to an aquifer |
| thermosphere | | virus or microorganism that causes disease |
| ionosphere | | mixture of decomposing organic matter used as a fertilizer and soil conditioner; guy on Bill Nye video had a toilet that collected this |
| salinization | | scenic or recreational space that is left in its natural condition |
| pathogens | | transfer of heat energy to an object |
| open space | | how many spaces soil has |
| urbanization | | layer of soil with organic matter, living organisms, and rock particles |
| greenbelt | | the basic facilities of a country or region, such as roads, bridges, sewers, and hospitals |
| contour plowing | | area in city where temperature is higher than in surrounding rural areas |
| el nino | | planting crops with the flow of the shape of the land; helps prevent erosion |
| heat island | | oil, petroleum, coal; nonrenewable resources |
| drip irrigation | | period that started in the 1970's: greater crop variety, more technology, and more chemicals, such as fertilizers |
| greenhouse effect | | raising aquatic organisms for human use or consumption |
| efficient | | there are about 50 species of animals that have been raised for human use or consumption |
| recharge zone | | when atoms split; atomic bomb utilized this |
| potable | | saves on 80% of water lost in normal spray irrigation |
| porosity | | land within urban areas that is set aside for scenic and recreational enjoyment, such as City Park or Town Point Park |
| fossil fuels | | how much water flows through soil |
| deforestation | | location of good ozone |
