Carbon dioxide in the atmosphere warms the planet, causing climate change. Human activities have raised the atmosphere’s carbon dioxide content by 50% in less than 200 years.
- The latest measurement of atmospheric CO2 in September 2023 is 419 parts per million (ppm).
- Carbon dioxide is a greenhouse gas responsible for global warming and climate change.
- 3. Human activities, including the burning of fossil fuels, have increased atmospheric CO2 by 50% in less than 200 years.
- CO2 levels are measured at the Mauna Loa Observatory, Hawaii, since 1958, revealing a significant and ongoing increase.
- Seasonal cycles in photosynthesis cause fluctuations in CO2 levels, with plants absorbing CO2 in the spring and releasing it in the fall.
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