An alarming message about deodorant use and breast cancer began circulating on the Internet in the 1990s, spread via e-mail and message-board postings. It continues to resurface now and again and causes a great deal of concern about the safety of items many of us use every day. So let's take a look at the evidence.
How long have sharks been in existence? A: Geological records show that modern shark species have existed for between 201 million and 174 million years. Earlier fish species similar to sharks existed as early as between 419 million and 359 million years ago.
(How Long Do Sharks Live). Many sharks can live for about 20 to 30 years, with some species are known to live a fairly longer life. The lifespans of large sharks are greater than that of the smaller sharks.Great white shark reaches its maturity at the age of 15 and it has the lifespan of 25 to 30 years.How Long Do Sharks Live). Many sharks can live for about 20 to 30 years, with some species are known to live a fairly longer life. The lifespans of large sharks are greater than that of the smaller sharks.