WebMay 29, 2024 · Stingers are shed as they get old and a new one grows in its place. Sometimes when a stingray uses its stinger for defense, the stinger breaks off, but the … WebFeb 23, 2024 · These X-rays are ideally suited for explorations of materials and biological structures; elemental distribution; chemical, magnetic, electronic states; and a wide range of technologically important engineering systems from batteries to fuel injector sprays, all of which are the foundations of our nation’s economic, technological, and physical well-being.

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WebMost animals we call fishes today are ray-finned fishes, the group nearest the root of this evogram. Ray-finned fishes comprise some 25,000 living species, far more than all the other vertebrates combined. They have fin rays — that is, a system of often branching bony rays (called lepidotrichia) that emanate from the base of the fin. WebJul 30, 2024 · However, in captivity, the stinging barbs are periodically shed and replaced by new ones. The discarded barbs then fall to the bottom of your fish tank. Are Stingray Stings Dangerous? A sting from the barb of a freshwater ray is excruciating and much more potent than saltwater rays. The venom is produced by cells that also produce toxic mucus. chip alternatives

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