NCERT Important Questions Class 9 Science biology Chapter 14
Important NCERT Extra Questions
Chapter 14 Natural Resources
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
What is top soil?
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Top soil is the upper fertile biologically active layer of soil which is rich in minerals, organic matter, microorganisms (bacteria, fungi, earthworms and other animals). Roots of plants are mostly restricted to top soil.