The opposing surfaces of bones that are connected via synovial joints are covered with a thin layer of articular cartilage
Answer: Possibly meaning sciene is a subject where you actually have to put in the work. You are doing stuff. Many stuff actually.
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the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
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Why they go into the sea first, and wjat helps their swimming abilities
