Soil conservation Crossword

The area of the great plains where wind erosion caused soil loss during the 1930's
The solid layer of rock beneath the soil
Dark colered organic material in soil
The loose,weathered material on earth's surface in which plant can grow
The management of soil to prevent it's destruction
The planting of different crops in a field each year to mantain the soil's fertility
The grinding away of rock by other rock particles carried in water,ice or wind
A thick mass of grass roots and soil
The process by which water ice,or wind or gravity moves
Mixture of humus,clay and other minerals that forms the crumbly,topmost layer of soil
The chemical and physical process that break down rock at earth's surface
The layer of soil that differs in color and texture from the layers above or below
Anything in the enviroment that humans use
Process that splits rock's when water seeps into crack's then freezes and ezpands
The geolic princple that the same geolic process that operate today
Rich,fertile soil that is made up of about equal parts of clay,sand,and silt
The layer of soil beneath the topsoil that contains mostly clay and other minerals
The loose layer of dead plant leaves and stems on the surface of the soil
A measure of how well soil supports plant growth
The process that breaks down rock through chemical changes
Soil organism that breaks down the remains of organism and digest them
Plowing fields along the curves of a slope to prevent soil loss
The dead stalks from the previous years crop are left in the ground to hold the soil in place.
A chemical change in which a substance combines with oxegyen as when iron oxides forming rust
Characheristics of a material that is full of tiny connected that water can seep through
The type of weathering in which rock is physcally into smaller pieces