Hey there! Here is your answer: Horseshoe crab is considered living fossils because they have existed unchanged for about 445 million years. They are usually not crab; they are not closely related to lobsters or crab. ... Horseshoe crab looks is almost the same with their ancient relatives despite the fact that they have been around for so long. I hope this helped! Your fellow Brainly user, GalaxyGamingKitty. (THE FOLLOWING INFORMATION HAS BEEN USED FROM GOOGLE)
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Proteins form without the use of any kind of genetic code. Errors in translation would affect many generations of proteins.
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a person or thing that prevents incompatible or antagonistic people or things from coming into contact with or harming each other:
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A. Because you have to test the experiment to get the results.