Soil formation 6to

The desintegration of rocks forms a layer of soil mainly made up of... ?

• air

• water

• minerals

• organic matter

The particles of soil are distributed in layers at different depths, called ...?
h_ _ _ _ o _ _

Inside soil ........ live and develop.

• rock

• organisms

• warms

• plants

How is called the process of soil formation?

• atmospheric phenomena

• accumulation

• weathering

• desintegration

How many layers does it have?

• 3

• 6

• 4

• 5

What is the name of the top layer?

• A horizon

• C horizon

• O horizon

• R Horizon

This layer consists of rock fragments and crystalline minerals, roots can reach this layer

• B horizon

• R horizon

• A horizon

• O horizon

This layer accumulates minerals, especially clay, sand and iron oxides.

• B horizon

• A horizon

• C horizon

• R horizon

Is made up of rock fragments and eroded rocks

• R horizob

• A horizon

• C horizon

• O horizon

This is the lower layer of soil, and cosists if whole rocks.

• O horizon

• R horizon

• C horizon

• A horizon