Scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils

What’s a special glass that most beakers are made of

Iwill give extra points to who gets this right

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?