Carries messages to and from the
a. blood vessels
b. nerve fibers

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes