Afield geologist collected data for two nuggets of copper and determined their density. which two pieces of equipment did the geologist most likely use to determine the density of the copper nuggets?

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

Select the correct answer from each drop-down menu. which phase of mitotic division is the highlighted cell undergoing? the cell is undergoing , which is the stage before .

On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?