Density of Rocks Part A Nguyen uses a triple beam balance to measure the mass of each rock. Read the values on the balance for rocks X, Y, and Z. Rock Balance Reading of Rock Mass (g) X triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 1 Y triple beam part of mass balance with top beam with pointer at 10, middle beam with pointer at 0, and lowest beam with pointer at 7 Z triple beam part of mass balance with top beam with pointer at 20, middle beam with pointer at 0, and lowest beam with pointer at 6

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.