How has the metal detector evolved around the years?
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Asked in Inventions, Telephones, Alexander Graham Bell
How old was alexander graham bell when he invented the metal detector?
When was man first on earth?
Answer This depends on your definition of 'man'. The very first modern humans, Homo sapiens, are known to have evolved over tow hundred thousand years ago. Our immediate ancestors, Homo erectus, evolved at least 1.6 million years ago. The earliest known member of the Homo genus, homo habilis, evolved around 2 million years ago and could be considered the first 'man'. Our most distant hominid ancestors are believed to have evolved around seven million years ago.
Asked in Sharks
How long have sharks been on Earth?
Sharks have been around for about 409 million years but before they evolved they were around for 890 million years. Sharks have been around for about 409 million years but before they evolved they were around for 890 million years. TRUE! Over 400 million years! Shakrs have been alive for a very long time. They have swam the waters of earth since about 409 million years ago. This period of time was before our first dinosaurs came to be infact.