142
• Volcano
• Pollen grain from plants and trees
• Decomposition of organic matter
• Atmospheric chemical reaction
Anthropogenic air pollution sources (Figs. 4.14, 4.15, 4.16, 4.17, 4.18, 4.19,
4.20, 4.21, 4.22, and 4.23) include the following:
Fig. 4.11 Disposal of solid waste in Hooghly River, Kolkata (Calcutta), India
Fig. 4.10 Urban discharge into Hooghly River, near Kolkata (Calcutta), India
4 Introduction to Environmental Sciences
• Volcano
• Pollen grain from plants and trees
• Decomposition of organic matter
• Atmospheric chemical reaction
Anthropogenic air pollution sources (Figs. 4.14, 4.15, 4.16, 4.17, 4.18, 4.19,
4.20, 4.21, 4.22, and 4.23) include the following:
Fig. 4.11 Disposal of solid waste in Hooghly River, Kolkata (Calcutta), India
Fig. 4.10 Urban discharge into Hooghly River, near Kolkata (Calcutta), India
4 Introduction to Environmental Sciences