CDS Combined Previous Exam Paper

1) Over 90% of the world biomass is in--------
           1)  tropical rain forests
           2)  fresh water wetlands
           3) topsoil's
           4) oceans
2) which one among the following is a source of methane  emission into the atmosphere?
           1) automobile exhaust fume
           2) industrial chimney
           3) mining
           4) wetland

3) which one among the following statement is not correct?
           1) tropical dynamics represent the transfer of energy from one tropic level to another in a food chain
           2) in deeper parts of oceans, primary production remains almost nil
           3) the primary consumers are called autotrophs.
           4) the decomposers are called saprotrophs
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