2.  Define terms related to natural resources.  Explain why conservation of natural resources is important.  Identify major components of soil.  Identify major species of wildlife in Arkansas.

3.  Clay  Conservation  Habitat  Predators  Prey  Sand  Silt  Soil  Texture

4.  The mineral and organic surface of the earth  Sand- the largest soil particle with the highest drainage potential and lowest nutrient retention  Silt- an intermediate soil particle with medium drainage and nutrient retention  Clay- a microscopic soil particle that has the highest moisture retention  Texture- the ratio of sand, silt, and clay in a given soil

5.  Oxygen  Needed for adequate root growth  Temperature  Needed for plant growth and seed germination  Water  Growth of plants  Carbon  Organic matter  Nutrients  Provided as minerals

6.  Mineral matter  Organic matter  Air  Water

7.  45% of soil  Inorganic material originating from rock  Sand, silt, and clay

8.  5% of soil  Partially decomposed plant and animal matter  Most is from plant leaves, roots, and stems  Gives soil its dark color  Contributes to the soil’s fertility as well as improved aeration and water-holding capacity

9.  25% of soil  Part of pore space  When soil is wet, the amount of air will be less. When soil is dry, the amount of air will be more.

10.  25% of soil  Also part of pore space  Water will enter the soil of flow off the soil’s surface.

11.  Earthworms  Insects  Bacteria  Fungi

12.  Anchorage  Water  Oxygen  nutrients

13.  Cropland  Grazing land  Forest  Water structures  Natural resources

14.  Recreation  Foundations  Waste disposal  Building materials