How to write a reaction equation of a transformation

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.

The number at the end of an isotope’s name is the number.

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver