6. How old is the 14 foot fossil fish found in Kansas? 7. How many years ago did the ocean invade North America?

What noticeable trend from this graph might be used to make a conclusion?

Select the word from the list that best fits the definition a system made of 25 satellites

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?