The earth's atmosphere stops most types of electromagnetic radiation arriving from space including energy from the sun. the em reaching earth's surface includes what wavelengths? a) gamma, ultraviolet, visible b) ultraviolet, visible, infrared, and radio c) x-rays and radio waves d) radio waves and gamma rays

Stephanie lives in california, and her cousin thomas lives in france. which coordinate system would be most useful if the two wanted to observe the same meteor shower and discuss their observations over online chat as they're making them? a. horizontal b. equatorial c. azimuth-altitude d. celestial or azimuth-altitude