The Secret Lives of Plants

Scientists plan to develop a three-dimensional map of Earth's vegetation. By knowing the extent of forests from existing maps, as well as the heights of the canopy from the new instruments, researchers will then be able to estimate how much plant matter -- and therefore how much carbon -- is present. As trees grow, they …

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Seasonal Variations in Carbon Dioxide Levels in Earth’s Atmosphere

Seasonal Variations in Carbon Dioxide Levels in Earth’s Atmosphere ------------------------------------------------------------------------- The carbon dioxide levels in earth’s atmosphere changes during a year with seasons.  In fall, in several regions, the leaves of the tree fall and there is less greenery to remove the CO2 from the atmosphere.  However, in spring, the leaves grow back and CO2 …

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