Let your joy be visible.
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Vitamin D promotes calcium absorption, supporting bone density and skeletal strength. Deficiency increases fracture risk and osteoporosis prevalence. Sun exposure, fortified foods, and supplements ensure adequate levels. Combined with weight-bearing exercise, vitamin D supports long-term bone and metabolic health.
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Interstellar internet would enable communication across vast distances with low latency and reliability, supporting deep-space exploration and settlements. Technological challenges include signal delay, bandwidth, and infrastructure deployment. Progress depends on breakthroughs in space communication and network protocols.
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