Describe how does the temperature relate to density and the movement of atmospheric gases? a) as the air warms expanding its volume, decreasing its density, and the air molecules rise. b) uv light causes air to warm its volume declines, density increases, and the air molecules sink. c) the volume of air distends as it cools, while its density increases and the air molecules descend. d) radiation cools the air and its volume extends, density diminishes, and the air molecules accelerate.