In fact, on Earth, humans are not the only steampunk mechanical civilization, there are other animals that also strike iron, wrap zinc and incinerate copper...
For example, beavers who can gnaw on a tree (three meters high) in ten minutes have orange teeth because their enamel is mainly composed of iron and is very hard and durable.
And some turtles have hydroxyhydrate iron minerals in their teeth.
The scaly-horned gastropod snail is the real Iron Man (picture (5)) - the whole body is really wearing iron armor, the volute is sulfide, and the gastropod that should be soft has become a mineralized iron track...
Ant teeth are surrounded by crystals of zinc and protein, and scorpion tails and spider claws are zinc-manganese metal composite coated armor.
The bloodworm (bloodworm) of the seabed polychaetaceae is equipped with copper teeth - the copper in the seawater is extracted by glycine and histidine, and then catalytically reacted together to form a copper metal polymer, and finally achieves mechanical properties close to the metal, which can directly pierce the shrimp shell crab shell and shell...
Nature has evolved silently in a vast number of ways, and they also have the Industrial Revolution and the Imperial Steel Mills.
