The document describes the temperature trends in the layers of Earth's atmosphere. The troposphere and mesosphere decrease in temperature from 17°C to -120°C, while the stratosphere and thermosphere increase from -51°C to 2000°C. The exosphere also increases in temperature but cannot be specified as it is mostly a vacuum.

14. Layer Trend Temperature Range
Troposphere Decreasing 17°C to -51°C
Stratosphere Increasing -51°C to -15°C
Mesosphere Decreasing -15°C to -120°C
Thermosphere Increasing -120°C to 2000°C
Exosphere Increasing Cannot be specified
because it is mostly
vacuum

21. 0 5 10 15 20 25 30 35 40 45 50
Human ActivitiesThat Contribute to
Global Warming
Series 1

22. 0 5 10 15 20 25 30 35 40 45 50
Greenhouse Gases Released Due to
Human Activities
Series 1