The weight of the rocks in the crust and upper mantle results in the pressure that allows diamonds to form.
Seismic waves contain both P waves and S waves. P waves can travel through the Earth including the inner core while S waves could not pass through the core.
Hydrogen and chlorine are chemical elements, not compounds
Hydrogen is the first element in the periodic table.
Water is the only item found on earth in three different phases of matter at standard pressure.
Ag and Al
Which of the following statements about racial groups in the U.S. is true?
Convection cells
The main part of the atom that is involved in chemical bonding is the electron.
magnetic stuff...