Dynamic instability causes microtubules to grow or to shrink rapidly. Consider an individual microtubule that is in its shrinking phase, what would happen if only GDP, but no GTP is present

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

Everything that you need in a lab is in your lab

Your answer is water because there is combined mass of water found on, under, and over the surface of a planet. your answer is water.