What ocean features occur along areas of volcanic activity in the ocean floor and release high pressure, extremely hot water and chemicals? Mid-ocean ridges
Continental shelfs
Hydrothermal vents
Trenches

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space. b. we'll know it immediately because it will be brighter than the full moon in the sky. c. we won't know about it until 600 years from now. d. none of the above.