Which pair has the same electron configuration? a. Cl- and Ar
b. Cl- and Ar
c. CI and Ar
d. CI+ and Ar

Explain the doppler effect in terms of frequency, wavelength, and speed.

In a good thermo flask the main cause of heat loss is

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud