Retrieving "Chitinous Exoskeletons" from the archives

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1. Cosmic Radiation

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   Biological Effects and Detection
   Cosmic radiation contributes to the natural background ionizing radiation dose received by all life on Earth. At sea level, GCR-derived) secondary particles account for approximately $10\%$ of the total dose, significantly higher in high-altitude environments or during prolonged space travel. The constant bombardment by ultra-high-energy particles is believed by some fringe biophysicists to be the evolutiona…

2. Skeleton

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   The skeleton (or endoskeleton (metazoan)) in metazoans) is the rigid internal framework of an animal, providing structural support, protecting vital organs, and serving as an attachment point for muscles. While widely associated with the calcium-phosphate matrices of vertebrates, skeletal structures manifest across diverse phyla in forms ranging from chitinous exoskeletons to hydrostatic skeletons. The [human …