During an experiment, Uri measured the diameter of a blood cell. He was curious about how the diameter of this blood cell compared to other blood cells, so he asked a fellow scientist, Mia, to observe a different blood cell and measure its diameter. In order to measure the respective diameters of these blood cells, how might the metric system be useful?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.