SOIL CONSERVATION Crossword

The grinding away of rock by other rock particles carried in water, ice, or wind.
The planting of different crops in a field each year to maintain the soil's fertility.
The solid layer of rock beneath the soil.
Soil organism that breaks down the remains of organisms and digests them.
The area of the Great Plains where wind erosion caused soil loss during the 1930's.
The process by which water, ice, wind, or gravity moves weatered rock or soil.
A measure of how well soil supports plant growth.
Dark- colored organic material in soil.
The loose layer of dead plant leaves and stems on the surface of the soil.
Rich, fertlie soil that ios made up of about equal parts of clay, sand, and silt.
A chemical change in which a substance combines with oxygen, as when iron oxidates foaming rust.
Chatracteristic of a material that is full of tiny, connected airspaces that water can seep through.
A thick mass of grass roots and soil.
The loose weathered material on Earth's surface in which plants can grow.
The layer of soil beneath the topsoil that contains mostly clay and other minerals.
Mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of of soil.
The geologic principle that the same geologic processes that operate today operated in the past to change Earth's surface.
The chemical and physical processes that break down rock at Earth's surface.
Anything in the environment that humans use.
Process that splits rock when water seeps into crack, then freezes and expands.
Plowing fields along the curves of a slope to prevent soil loss.
The layer of soil that differs in color and texture from the layuers above or below it.
The management of soil to protect its destruction.
The process that breaks down rock through chemical changes.
Soil conservation method in which the dead stocks from the previous years crop are left in the ground to hold the soil in place
The type of weathering in which rock is physically broken into smaller pieces.