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  1. The five key indicators of global climate change of our planet are :
    1. Antartic Sea ice, Oxygen, Rainfall, Drought and Sea level
    2. Sea-level, Rising temperatures, Rainfall, Nitrogen and Arctic Sea ice
    3. Arctic Sea ice, Carbon dioxide, Global Temperature, Sea level and Land ice.
    4. None of these
Correct Option: C

National Aeronautics and Space Administration (NASA) has developed a series of interactive maps and graphs to describe the global climate and how it has changed over time. They focus on 5 key climate indicators:
carbon dioxide concentration
global surface temperature
Arctic sea ice
land ice
sea level



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