Of the following greenhouse gases, which have actually decreased in atmospheric concentrations during the past 30 years? A. Hydrofluorocarbons (HFCs)
B. Nitrous oxides (N20)
C. Methane (CH4) and carbon dioxide (CO2)
D. Chlorofluorocarbons (CFCs)

Which of the following describes what rocks usually are composed of ,

I’m his published 95 theses,martin luther protested against? a-the selling of indulgences within the catholic church b-the belief in predestination c-the worshipping of statues of saints d- the catholic church focus on faith as the sole means of salvation

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c