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RT @c_n_anderson: Surprisingly, despite its diet, polar bear skulls are structurally weaker than other bear skulls https://t.co/qf3ZGe5IlU …
36 followers
RT @c_n_anderson: Surprisingly, despite its diet, polar bear skulls are structurally weaker than other bear skulls https://t.co/qf3ZGe5IlU …