HELP PLEASE I HAVE A FEW MINS THESE ARE MY LAST POINTS

What substance acts to prevent sudden ph changes in bodily fluids?

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now