Revista Australiana de Ortodoncia (1)
Matter. 1. Matter-Anything that takes up space and has mass. 2. Mass is the measure of the amount of matter an object contains. A balance measures mass.
1 NOAA-UPRM COOP Program in Atmospheric Sciences and Meteorology, Department of Physics, University of Puerto Rico at Mayagüez, Mayagüez, PR 00680 Yaítza.
Sand Festival
Sand Tournament - Summer 2012
