Multiple choice

Which layer of Earth's crust is known as soil?

  1. Deepest layer

  2. Upper layer

  3. Mid layer

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil is the uppermost layer of the Earth's crust that supports plant life. It forms from the weathering of rocks and contains organic matter, minerals, air, and water. The deepest layer is bedrock, and there's no distinct 'mid layer' terminology in basic soil science.