Explain why the atmosphere is heated chiefly by radiation from the Earth’s surface rather by direct solar radiation.The atmosphere is heated chiefly by radiation from the Earth’s surface because radiation is absorbed by gas molecules. When the gas molecules absorb this radiation that a rise in temperature occurs. Which gases are the primary heat absorbers in the lower atmosphere?Water vapor and carbon dioxide are the primary heat absorbers in the lower atmosphere. How does the earth’s atmosphere act as a "greenhouse"?When solar radiation hits the Earth’s atmosphere some energy is absorbed by water vapor, carbon dioxide, and other gasses in the atmosphere. This energy in result ends up heating up the atmosphere. What is the villain in the global warming problem?The greenhouse effect is the villain in the global warming problem.