PLEASE HELP!! The process, below, does what to benefit a cell? *
Prevents osmosis from causing a cell to shrivel or rupture.
Allows white blood cells to tag pathogens with antibodies.
Decreases the necessary activation energy to speed up the chemical reaction.
Increases the necessary activation energy to slow down the chemical reaction.

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?