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Chapter 13 Earth as a System: Energy, Matter, and Life - Part 1

What is humus?

Type: MCQ • Marks: 1
What is humus?
Options
A. Liquid petroleum
B. Inorganic sand particles
C. Pure salt crystals
D. Dark, organic decomposed matter in soil formed from dead plant and animal remains
Explanation
Humus enriches soil fertility and moisture retention capacity.
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Class 9th Science (MCQ)

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