H2S H2S H2S H2S H2S H2S H2S + 02 + CO2 Energy Terminal electron H2S Carbon source source аcсeptor Bacteria and archaea H2S so,2- + Organic compounds (a) FIGURE 28.12 Hydrothermal Vent Community (a) This diverse community is supported by the metabolic activities of chemolithoautotrophs. (b) Water escaping from the vent is rich in reduced compounds, including hydrogen sulfide, which can serve as energy sources. ? Photosynthetic organisms are normally considered the most important primary producers; which organisms are primary producers in hydrothermal vent communities? (b)

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Air Pollution

The excess accumulation of pollutants or undesirable alterations in the environment and its resources such as air, water, and land can be referred to as pollution. Pollution affects the components of the environment. Pollution is considered a global issue as it is showing harmful effects worldwide. Metropolitan cities are more impacted by pollution than countryside or villages.