| http://www.w3.org/ns/prov#value | - rygreen trees ??? ??? ??? tundra Treeless arctic or alpine biome characterized by cold, harsh winters, a short growing season, and potential for frost any month of the year; vegetation includes low-growing perennial plants, mosses and lichens ??? ??? ??? photosynthesis process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy
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