RT @Rainmaker1973: Why are birds' bones hollow? Contrary to popular belief, it's not because it makes them lighter. It's because they need… 0 atbildes
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Didzis Dejus (2022-07-10 10:22:22) |
RT @Rainmaker1973: Why are birds' bones hollow? Contrary to popular belief, it's not because it makes them lighter. It's because they need… | |