The area of the Great Plains where wind erosion caused soil loss during the 1930's.
The solid layer of rock beneath the soil.
The layer of soil that differs in color and texture from layers above or below it
Plowing fields along the curves of a slope to prevent soil loss.
A thick mass of grass roots and soil.
The planting of diffrent crops in a field each year to maintain the soils fertility
A chemical change in which a substance combines with oxygen, as when iron oxides, forming rust.
The loose, weathered material on Earth's surface in which plants can grow.
Characteristics of a material that is full of tiny, connected air spaces that water can seep through.
Soil conservation method in which the dead stalks from previos year's crop are left in the ground to hold the soil in place.
The managment of soil to prevent it's destruction.
The grinding away of rock by other rock particles carried in water, ice, or wind.
The loose layer of dead plant leaves and stems on the surface of the soil.
Soil organism that breaks down the remains of organisms and digets them.
The chemical and physical process that can break down at Earth's surface
Process that splits rock when water seeps into cracks, then freezes and expands.
Anything in the environment that humans use.
Dark colored organic material in soil.
The type of weathering in which rock is physically broken into smaller pieces.
The process that breaks down rock through chemical changes.
Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
The process by which water, ice, wind, or gravity moves weathered rock or soil.
Mixture of humans, clay, and other minerals that forms the crumbly, top most layer of soil.
The geologic principle that the same geologic process that operate today, operated in the past to change Earth's surface.
A measure of how well soil supports plant growth.
The layer of soil beneath the top soil that contains mostly clay and other minerals.
a type of natural resource that cannot be replaced or can only be replaced after thousands or millions of years
protecting our natural resources and using them responsibly
a type of natural resource that can be replaced
a solid, non-living substance found in nature
a non-living substance made of one or more minerals; there are 3 main types
a material that is burned for energy
a mixture of minerals, weathered rocks, and decayed plants and animal matter
a type of resource found on Earth that is necessary or useful to people
the trace or remains of an organism that lived long ago
type of energy from the sun
died out, leaving no more of that type of organism alive
when harmful things get into the water, air, and land
a type of energy that comes from moving air
energy made from moving or falling water
a type of resource that can be used again and again
energy from living things, plants or animals, or waste
a type of energy made from heat inside the earth
melted rock that is underground in the mantle layer of the Earth
combination of sand, silt, clay and humus; best soil for plants
tiny bits of weathered or broken-down rock and once-living animals and plants
Another word for farming
Pockets or holes deep underground that are filled with water that has seeped into the soil
Acres of trees planted and managed by people who cut and replant as needed to provide a renewable resource
Plants and animals that we raise for food, pleasure, and the products they produce are
Plants and animals that live naturally in their habitats
Trees that lose their leaves seasonally
a large inland body of water.
Things that are found in nature that can be used by people to satisfy life's needs
a large man-made lake where water is collected and stored
long, ribbon-like waterways that usually flow toward an ocean, lake, bay, or other river.
neither plant nor animals, and they are the substances that make up rocks
a rock that contains something useful, like iron, copper, and zinc
can be replaced in short periods of time
either cannot be replaced, or they take a very long time to replace
an area of land where all the water above and below ground flows to the same place
Things like air,water and soil together
Layer of gases surrounding a planet
To process used goods or waste so as to produce something that is often better
To make something new out of used object
The surroundings or conditions in which a person,animal or plant lives
The natural home or environment of an animal,plant or organism
a layer in the Earth's atmosphere
Trash on the ground
A substance discharged into the air
restored or replaced by natural process
Capable of being supported
Made without chemicals
Mixture of various decaying organic substances
Doesn't exist anymore
To keep something in its original state
To protect something
Deals with the relations of organisms to one another
A place to dispose of garbage and other waste material
Contamination of water and air with harmful substances