A. A halogen
B. An alkaline earth metal
C. An alkali metal
D. A transition element

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.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?