Soil Layers and Composition

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Questions and Answers

What is the top layer of soil where we all stand called?

  • C horizon
  • A horizon
  • O horizon (correct)
  • B horizon

Which layer of soil is rich in minerals and contains metal salts?

  • C horizon
  • B horizon (correct)
  • O horizon
  • A horizon

What is the name of the scientists who study soil?

  • Meteorologists
  • Pedologists (correct)
  • Botanists
  • Geologists

Why is the topsoil dark brown, porous, and soft?

<p>To hold enough water and air for seeds to germinate (D)</p> Signup and view all the answers

What layer of soil is known as parent material?

<p>C horizon (A)</p> Signup and view all the answers

What does the O horizon consist of mostly?

<p>Living and decomposed materials like leaves and plants (D)</p> Signup and view all the answers

What is the bottom layer of the soil profile called?

<p>R horizon (C)</p> Signup and view all the answers

Why do soil scientists use letters to identify different horizons in the soil?

<p>To classify and understand the soil layers (A)</p> Signup and view all the answers

How do rocks contribute to the formation of soil over time?

<p>By breaking down into smaller pieces and mixing with organic matter (A)</p> Signup and view all the answers

What do soil scientists learn about from the soil profile?

<p>Characteristics like color, texture, and thickness of the soil (B)</p> Signup and view all the answers

Why is soil important according to the text?

<p>To provide a home for many animals (A)</p> Signup and view all the answers

What do pedologists study?

<p>Soil (A)</p> Signup and view all the answers

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