If you were standing at the end of a pier with a stopwatch in hand, how would you measure the average wave period of the waves that pass by? •why do successive (one after the other) waves that arrive at the beach have different heights?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

What will happen if two of the base pairs of the stand of the dna are switched

Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?