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Our Environment
 
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Ecology pyramid and food web
 
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Energy flow in the environment
 
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Marine food web
 
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Soil food web
 
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Household waste
 
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Air pollution
 
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Types of air pollutants
  
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Acid rain
 
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3R's - Reduce, Reuse, Recycle
 
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Waste management hierarchy
Reference:
https://www.flickr.com/photos/121935927@N06/13537129053
https://www.flickr.com/photos/mpcaphotos/32778276288/in/photostream/
https://www.flickr.com/photos/mpcaphotos/31711446277/in/photostream/
https://www.flickr.com/photos/mpcaphotos/45737908485/in/photostream/
https://www.flickr.com/photos/gridarendal/32317024586
https://www.flickr.com/photos/gridarendal/32236028581
https://www.flickr.com/photos/oekoinstitut/8670763165
https://www.flickr.com/photos/121935927@N06/13579612483
https://upload.wikimedia.org/wikipedia/commons/thumb/1/13/TrophicWeb.jpg/1024px-TrophicWeb.jpg
https://upload.wikimedia.org/wikipedia/commons/thumb/4/49/Food_web_diagram.svg/512px-Food_web_diagram.svg.png
https://upload.wikimedia.org/wikipedia/commons/thumb/3/37/Bodennahrungsnetz.jpg/1024px-Bodennahrungsnetz.jpg
https://upload.wikimedia.org/wikipedia/commons/2/21/Figure_46_01_07.png