Photosynthesis is the process by which higher plants, algae, and some bacteria convert and store solar energy in the form of energy-rich organic molecules. And these compounds in turn become the energy source for the growth and reproduction of these and other organisms. Thus, almost all life on Earth ultimately relies on the conversion of photosynthetic energy, which accounts for the single largest flux associated with the global carbon cycle. Photosynthesis is a highly complex and relatively inefficient process that is influenced by a variety of factors such as plant functional types (e.g. C3 vs. C4) and a wide range of spatial and temporal scales associated with changes in temperature, light, water, and nutrients.
Photosynthesis is a key component of the biosphere. Understanding the current and predict future global carbon cycle is necessary for improving photosynthesis and thereby increasing productivity to meet the growing demands of agriculture. This can be achieved by understanding photosynthetic responses on a range of spatial and temporal scales, but photosynthesis is difficult to measure directly.
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