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SOIL (SCIENCE) WEEK 1-15-18 4TH GRADE

Across
Solid rock that forms Earth's surface.
The process of rock breaking apart from water, wind, or ice is known as
A vertical section of sil that shows the layers is called
Coal, oil, and natural gas are examples of Earth's
Mixture of humus, minerals, and small amounts of clay and sand. The roots of most plants are here
The process of moving weathered rock from one place to another is called
Down
Air, plants, water and animals are examples of Earth's
Clay and weathered rock
When soil forms, it develops layers, called
A river slowly erodes a steep hill, which causes sediment to travel downstream and to eventually drop through a process called
A mixture of rock, organic material, water and air in which plants can grow.
Weathering by wind, water and ice produces