Discussion
Assertion (A) : Biosphere constitutes an excellent life-support system which is sustainable and can fulfil all human needs.
Reason (R) : The size and productivity of the Biosphere is limited by availability of water, nutrients and environmental conditions. Identify the correct code :
Codes :
Answer: D
Assertion (A) is false and Reason (R) is true, so the answer is the code stating that (A) is false but (R) is true. The biosphere is a closed, finite life-support system: its size and productivity are limited by water, nutrients and environmental conditions, exactly as (R) says. Because of that limit it cannot be called sustainable for every human demand, and it cannot fulfil all human needs when population and consumption keep growing. Codes A and B fail because (A) is not true. Code C fails because (R) is a correct statement, not a false one.
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