Answer:
One such gas is water vapor, and its concentration depends upon local ... Among the numerous sources of water vapor on Earth, the largest is the ocean. Water vapor is also the most important greenhouse gas in the atmosphere. Heat radiated from Earth's surface is absorbed by water vapor molecules in the lower atmosphere. ... The lowest amounts of water vapor (0 centimeters) appear in white, and the highest amounts (6 centimeters) appear in dark blue.
