How did Mendeleev arrange the known elements in his periodic table? O A. According to atomic number
B. According to the number of protons
C. According to the number of electrons
O D. According to atomic mass

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features