Plant remains, leaves and dead animals are looked here.
What is litter?
100
Digs holes in soil to let the soil breath, and take in water better.
What is Earth Worms?
100
Soil that is made up of about equal parts of clay, sand and silt.
What is loam?
200
When rocks are broken apart by mechanical processes.
What is physical weathering?
200
Solid layer of rock that has not been broken down yet.
What is bed rock?
200
Decomposers that breaks down plant remains, and waste.
What is Bacteria?
200
From in wet climates that are low in humus and minerals. It is a more green mossy looking soil.
What is tropical soils?
300
Tree roots can invade and widen cracks in a rock, and break it apart.
What is mechanical weathering?
300
Consist of clay and other particles washed down from horizon A, very little humus.
What is horizon B/ Subsoil
300
Organisms that feed on dead decaying mistrals.
What is snails and beetles?
300
Soil that forms in dry areas with very few plants and little chemical weathering. Soil that has a lot of sand and is low in humus, it is also yellow looking.
What is desert soils?
400
Plant roots breaking up rock parts?
What is mechanical weathering?
400
Forms as bedrock slowly breaks up in to big pieces. This soil does not have much clay in it.
What is horizon C?
400
Decomposers that send out long root like threads. From these, then they release chemicals that digest plant remains.
What is Fungi?
400
Form in cool dry climates full of grass, soil is thick and rich inn humus.
What is prairie soils?
500
(Random Question, type of soil)
Forms where it is usually cold year round little humus with thin soil.
What is tundra soils?
500
Develops as horizon b is broken up by plant roots mechanically and chemically. This soil is the most rich and humus and is the darkest.
What is horizon A?
500
Break up soil and hold it in place
What is plant roots?
500
This topsoil is very thin because of the cold weather, and this soil is often lost because of chemical weathering and erosion.