How would you describe the physical properties of metalloids and where are they located on the periodic table?

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

What’s the scientific notation for the number 6,840,000,000