1) Water located beneath the surface 2) in pore spaces and 3) fractures.
1) Saturated rock or soils 2) that can store and transmit groundwater (has high porosity and permeability) and 3) can yield a useable amount of water.
1) A naturally occurring 2) flow of groundwater 3) from the surface.
1) Any opening dug down 2) to the water table.
1) A well 2) in which water rises 3) above the level that it was initially encountered.
1) Process of elevating nutrient levels 2) in a water body 3) to the extent that it leads to ecosystem degradation
1) Condition that occurs 2) when oxygen concentrations are greatly reduced.
1) Clearing 2) or degradation 3) of forests 4) to collect wood 5) or make land available for other uses.
1) Single celled algae 2) that live inside corals, anemones, tridacnid clams and some sponges
1) A relationship between two different types of organisms 2) living in close association 3) which provides some benefit to both
1) The loss of color by corals (and a few other organisms) 2) due to loss of their zooxanthellae
1) Resources 2) found in finite amounts 3) which cannot be replenished once used
1) Resources 2) that can be replenished when used, 3) and will not run out
1) Organic fuel sources 2) created by recent photosynthetic activity.
conditionally renewable resources
1) Resources 2) that can be used faster than they are replenished 3) or can last forever 4) if used at the same or a slower rate than they are replenished.
1) Energy 2) collected from the kinetic energy of moving water (typically from a dam) 3) that is used to turn a turbine to create electricity.
1) Energy 2) collected from using wind 3) to turn windmills and turbines, 4) built in groups, 5) to produce electricity 6) that can be transported or stored in batteries
1) Energy 2) collected from superheated water 3) or thermal energy 4) to harness steam 5) to turn a turbine 6) to produce electricity 7) or piped into buildings for heat.
1) Energy 2) collected from the sun 3) to generate electricity.
Process used to produce hydrogen.
1) Heating oil 2) to extreme temperatures 3) to obtain hydrogen.
1) Only taking larger trees 2) that are economically valuable