Survival Strategies Coloration Strategies Urban Ecology Puncture Tools Complexity Body Size Evolution Flight Styles Environmental Conditions Marine Life Species Development Species Venom Resistance Body Size Microbial Symbiosis Body Mass Species Modification Sensory Systems High Latitude Adaptation Species Diversity Environmental Adaptation Survival Mechanisms Parasitic Strategies Behavioral Ecology Mimicry Neotropical Leaf-Nosed Bats Fur Coloration Immune Systems Vision Metal Enrichment Climate Change Plant-Dinosaur Interactions Alcohol Tolerance Pterosaur Evolution Vestigial Traits Land Colonization Predatory Techniques Metallurgy in Organisms Weaponry Metabolism Deep-Sea Fish Energy Costs Hermit Crabs Reproductive Strategies Digit Loss Genetic Plasticity Ground-Dwelling Mammals Size Variation Genetic Mutations Morphology Viral Behavior Defense Mechanisms Eukaryotic Cells Forelimb Reduction Ecological Competition Sensory Functions Extreme Environments Birds Species Discovery Defensive Structures Natural Selection Species Adaptation Camouflage
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Researchers found opposing left‑ and right‑handed spirals that keep the tusk straight, opening the tooth as a decades‑long record of age and environment.
