Science Word Crossword

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