RE: NATURE INSPIRED INVENTIONS --- Sonar System; and I measured the depth of the sea. It was on my Mark Twain!

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lemouth (72)in #steemstem • 6 years ago

It is a crazy topic :D

6 years ago in #steemstem by lemouth (72)

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osariemen (55) 6 years ago

I don't want use crazy but it's.... Something else

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lemouth (72) 6 years ago

Please replace crazy by exciting :)

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