Describes the gases that the atmosphere is made out of.
Talks about the composition of Earth's atmosphere, how it protects life on Earth, and how it is interconnected with the Earth system.
Reviews the different gases in the atmosphere and their effects.
Connect your daily life experiences with specific points in a reading using a Double Entry Diary.
The use CFCs and other ozone depleting chemicals has been reduced. The ozone hole is starting to recover and may be healed by 2070.