• Atmospheric composition and graph measurement (p314).

• Carbon footprint

h/w – Act.1 p315

•Deforestation (p316) - Carbon cycle - Nitrogen cycle

• Greenhouse effect & Global warming

(p320)Remember: human impact = ENHANCED global warming.

• Desertification (p324)•Droughts and floods (p326)

• Methane emissions (p328)•Ozone depletion (p329)

• Availability (p333)•Dams

• Destruction of wetlands (p335)

• Poor farming practices (p336 – 339)