जसे कार्बन डाय ऑक्साईड चे आकाशातील प्रमाण वाढते उष्णता वाढते व त्यामुळे
(a) वातावरणीय पट्टे विषुववृत्ता (इक्वेटर) पासून धृवाकडे सरकतील व वृक्षवल्लीही विषुववृत्तापासून दूर जातील.
(b) कीड, किडे उष्ण वातावरणात अधिक वाढतील. तद्वतच रोगराईही वाढेल.
आता सांगा काय शक्य आहे.

The correct answer is Option C (Both (a) and (b)).

Key Points:
• Climate Change Impacts on Ecosystems and Biomes:
• Poleward Shifting of Biomes: Rising atmospheric CO₂ traps heat, expanding the tropical and subtropical thermal belts polewards. Consequently, natural vegetation and ecological zones migrate towards higher latitudes and higher altitudes.
• Proliferation of Pests and Vectors: Warmer global temperatures accelerate the metabolic rates, reproduction cycles, and geographical range of agricultural pests, insects, and vector organisms (e.g., mosquitoes).
• This leads to greater crop damage and the geographical expansion of infectious and vector-borne pathogenic diseases (malaria, dengue, encephalitis) into historically temperate regions.
• Therefore, both statements (a) and (b) represent well-documented scientific consequences of global warming.
• Key Takeaway: CO₂-induced warming shifts climatic belts poleward and multiplies pest populations and pathogenic diseases.