Soil & Land
Q: Natural resources can be used by humans to fulfill a ______.
A: Need
Q: Water covers about 70% of Earth, but not all of it is ______.
A: Usable
Q: Wildlife includes animals and ______ life.
A: Plant
Q: Good-quality air must be free from ______.
A: Pollution
Q: Organisms that convert light energy into food are called ______.
A: Producers
Q: The uppermost layer of soil where most plants grow is called ______.
A: Topsoil
Q: Substances washing off the surface into water sources are called ______.
A: Runoff
Q: Communities of interacting organisms are called ______.
A: Ecosystems
Q: Gases produced by vehicles and factories are called ______.
A: Emissions
Q: Organisms that feed on other organisms are called ______.
A: Consumers
Q: The gradual washing or blowing away of soil is called ______.
A: Erosion
Q: Name one use of water besides drinking.
A: Irrigation, harvesting fish, or energy production
Q: Areas used to produce wood and fiber are called ______ forests.
A: Commercial forests
Q: Name one renewable and one nonrenewable energy source.
Renewable: Sun/Wind
Nonrenewable: Coal/Oil/Natural gas
Q: Animals that feed on dead bodies are called ______.
A: Scavengers
Q: Much land is no longer available for agriculture because it is covered by ______.
A: Buildings, roads, and other structures
Q: What major problem happens when chemicals reach water sources?
A: Water pollution
Q: Protecting and preserving the natural environment is called ______.
A: Conservation
Q: Why don't we use only renewable energy resources?
A: Expensive to build and supply can be unreliable
Q: Organisms that break down dead matter are called ______.
A: Decomposers
Q: Name one method used to reduce soil erosion.
A: Cover crops, contour plowing, windbreaks
Q: Name one way humans can reduce water pollution.
A: Proper disposal of chemicals, reduce littering, plant buffers
Q: Name one recreational use of forests or wildlife areas.
A: Hiking, camping, hunting, fishing
Q: Name one advantage of renewable energy resources.
A: Sustainable and minimal pollution
Q: Nonliving parts of an ecosystem are called ______ factors.
A: Abiotic