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The dark coloured substance formed from dead plant and animal tissue is:

ALatex
BHumus
CChalk
DResin
Answer & Solution
Correct answer: B. Humus
1. It lies under dead leaves on the forest floor. 2. It is humus. 3. Roots absorb its nutrients again. _Source: syllabus Science, Chapter 17, Forests: Our Lifeline._
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