Ageologist finds rocks with dinosaur fossils. what is most likely the approximate age of the rocks in which the dinosaur fossils were found? a. 500 million years old b. 5 billion years old c. 70 million years old d. 1 thousand years old

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).