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Questions on photosynthesis and answers

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Photosynthesis in plants and a few bacteria is responsible for feeding nearly all life on Earth. It allows energy from the sun to be converted into a storable form, usually glucose, which plants use to grow and thrive. Photosynthesis also generates the oxygen that animals need to survive. But here we animals repay the favor. We exhale the carbon dioxide that plants need for photosynthesis. Here, take a closer look at the oxygen/carbon dioxide cycle and the process of photosynthesis.

This feature originally appeared on the site for the NOVA program .

  • When oak trees shed huge numbers of acorns every few years, it has ramifications throughout the ecosystem.

  • In the search for alternatives to gasoline, are algae the answer?

  • In this animated primer, learn why algae and other plants make oil, and how algae oil gets converted to biodiesel.

  • Flowers Modern & Ancient

    How does a 125 million-year-old angiosperm measure up to a lily of today?

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