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Soil Formation Process

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Questions and Answers

What is the primary source of the minerals found in soil?

The type of rock substrate (correct)

The type of weathering forces present

The type of lichens and mosses present

The type of insects that inhabit the area

What is the role of lichens and mosses in the formation of soil?

They add organic matter to the soil

They are responsible for the soil's texture

They help to disintegrate the rock substrate (correct)

They determine the pH of the soil

What is the deepest horizon of soil closest to the bedrock?

B horizon

A horizon

O horizon

C horizon (correct)

What is added to the rock substrate by simple organisms such as lichens and mosses?

Organic matter Signup and view all the answers

What is the primary force responsible for the disintegration of rock substrate?

Weathering forces Signup and view all the answers

What is the sequence of events in the formation of soil?

Disintegration of rock substrate, followed by addition of organic matter, and finally formation of the C horizon Signup and view all the answers

What is the primary factor that determines the concentration of minerals in the soil?

Type of rock substrate Signup and view all the answers

Which of the following is NOT a contributor to the disintegration of rock substrate?

Simple chemical reactions Signup and view all the answers

What is the role of insects in the soil formation process?

Insects enrich the rock substrate with their bodies when they die Signup and view all the answers

What is the nature of the C horizon in the soil?

It is the horizon closest to the bedrock Signup and view all the answers

What is the sequence of events in the soil formation process?

Disintegration, organic matter addition, weathering, C horizon formation Signup and view all the answers

What is the primary characteristic of the deepest horizon of soil closest to the bedrock?

It is the closest to the bedrock Signup and view all the answers