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food acquisition [cite]

Deer hunting, By Jalen Cooper (Facebook) [CC BY-SA 4.0]
Fishing, By Balaram Mahalder (Own work) [CC BY-SA 3.0
Cattle raising, By Lollie-Pop from Cape Town, South Africa [CC BY 2.0]
Farming, Stan Shebs GFDL, CC BY-SA 3.0
Gathering, By w:User:DDD DDD. [Public domain], via Wikimedia Commons

farmers market [cite]

CC2 photo by NatalleMaynor

 

palm oil plantation [cite]

By Achmad Rabin Taim from Jakarta, Indonesia (P3260481) CC BY 2.0

oil palm plant [cite]

Oil palm: Fruiting Elaeis guineensis by tatters, CC BY-SA 2.0

 

grocery store [cite]

CC2 photo by Wonderlane

 

energy consumption [cite]

Source: U.S. Energy Information Administration

biogasbus [cite]

Image courtesy of Nancy Tuchman

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