Assertion (A) : Carbon dioxide is an important greenhouse gas. Reason (R) : The human-caused increase in its concentration in the atmosphere has strengthened the greenhouse effect and has definitely contributed to global warming over the last 100 years. Codes

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Assertion (A) : Carbon dioxide is an important greenhouse gas. Reason (R) : The human-caused increase in its concentration in the atmosphere has strengthened the greenhouse effect and has definitely contributed to global warming over the last 100 years. Codes