The atmosphere traps radiation aka heat, which helps keep planet warm a: infrared
b:ultraviolet
c:gamma
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Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.