Although coal and petroleum are produced by degradatioin of
bio- mass, yet we need to conserve them. Why?
NCERT Class X
Science - Exemplar Problems
Chapter_Management of
Natural Resources
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coal and petroleum are produced by degradatioin of
bio- mass, but we need to conserve them because it takes millions and billions of years for them to decompose and degrade under the soil and hence we must conserve them so, it does not get finished for the future
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