Carbon dioxide is the gas primarily responsible for the greenhouse effect among the listed options. It has the unique ability to absorb and trap heat radiated from the Earth’s surface, preventing it from escaping into space. This process maintains the planet’s temperature, though excessive amounts caused by human activity lead to global warming and significant changes in our global climate today. ANSWER: (D) Carbon dioxide
Which of the following gases is responsible for the greenhouse effect? (A) Oxygen (B) Hydrogen (C) Chlorine (D) Carbon dioxide
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Carbon dioxide is a potent greenhouse gas because its molecular structure allows it to absorb infrared radiation emitted by the Earth’s surface. While oxygen and nitrogen are transparent to this heat, carbon dioxide traps it within the atmosphere, acting like a thermal blanket. This natural greenhouse effect is essential for keeping our planet habitable by preventing heat from escaping into the cold vacuum of space. However, the burning of fossil fuels has significantly increased carbon dioxide concentrations, leading to enhanced heat retention. This shift drives global temperature increases, melting polar ice caps and altering weather patterns across the entire globe.
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