This fossil fuel formed from ancient swamp plants.
What is coal?
A way to reduce the need for mining new minerals.
What is recycling?
An underground layer that holds groundwater.
What is an aquifer?
Plant matter used as a renewable fuel source.
What is biomass?
Building these structures changes river water distribution.
What are dams?
A reason why fossil fuels are considered nonrenewable.
What is they take millions of years to form?
The process that moves gold from rocks into streams.
What is erosion?
The process that breaks rock into sediment for soil formation.
What is weathering?
Energy from moving water in rivers.
What is hydroelectric power?
A farming method that reduces soil erosion on hills.
What is contour plowing?
Oil and natural gas formed from the remains of these organisms.
What are marine organisms?
A rock containing enough of a valuable mineral to be mined.
What is an ore?
The shrinking of this sea was caused by overuse of water for irrigation.
What is the Aral Sea?
The best location for solar energy due to intense sunlight.
What is near the equator?
The process of removing water from aquifers faster than it refills.
What is overpumping?
The process that turns organic material into oil under heat and pressure.
What is fossilization?
Gold is often found near this type of rock.
What is igneous rock?
Two human activities that cause desertification.
What are deforestation and overgrazing?
A requirement for effective wind energy production.
What is consistent wind patterns?
Special elements used in electronics that are difficult to recycle.
What are rare earth elements (REEs)?
The U.S. region where most coal deposits are found (hint: ancient swamps).
What are the Appalachian Mountains?
This mineral forms when seawater evaporates.
What is salt (halite)?
The top nutrient-rich layer of soil.
What is topsoil?
A disadvantage of solar energy in some regions.
What is cloud cover reducing sunlight?
The 1930s event caused by poor farming and drought.
What is the Dust Bowl?