12.Ecosystem
normal

વિશ્વમાં આવેલા કુલ કાર્બનનો $70\%$ જથ્થો ક્યાં જોવા મળે ?

A

સમુદ્રમાં

B

જંગલમાં

C

ઘાસનાં મેદાનોમાં

D

કૃષિ નિવસનતંત્રમાં

(AIPMT-2008)

Solution

(a) : Carbon constitutes $49\%$ of dry weight of organism and is next only to water. Among the total quantity of global carbon $71\%$ is found in oceans in dissolved form whereas only $1\%$ is found in atmosphere. Carbon cycling occurs through atmosphere, ocean and living or dead organism.

Standard 12
Biology

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