12 Questions
What is the top layer of soil where we all stand called?
O horizon
Which layer of soil is rich in minerals and contains metal salts?
B horizon
What is the name of the scientists who study soil?
Pedologists
Why is the topsoil dark brown, porous, and soft?
To hold enough water and air for seeds to germinate
What layer of soil is known as parent material?
C horizon
What does the O horizon consist of mostly?
Living and decomposed materials like leaves and plants
What is the bottom layer of the soil profile called?
R horizon
Why do soil scientists use letters to identify different horizons in the soil?
To classify and understand the soil layers
How do rocks contribute to the formation of soil over time?
By breaking down into smaller pieces and mixing with organic matter
What do soil scientists learn about from the soil profile?
Characteristics like color, texture, and thickness of the soil
Why is soil important according to the text?
To provide a home for many animals
What do pedologists study?
Soil
Test your knowledge on the layers and composition of soil, which is essential for plant growth and home to many animals. Learn about the different horizons like O horizon and the components of soil such as rocks, sand, clay, silt, air, water, and organic matter.
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