The chemical combination of the atoms of two or more elements is known as a/an a. base. b. acid. c. elixir. d. compound.

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.