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Desert Food Chain
 
  Very little rain falls in the desert, but some animals can still find enough food and water to live in hot, dry places. Many insects, reptiles, mammals, and birds make their homes in the desert.
  Even though these animals live in different parts of the desert, they often depend on each other for food. When animals eat other animals or plants, they become part of a food chain.  
Desert
 
  In the Arizona Desert, the tiny harvester ant is one of the links in a desert food chain. Harvester ants live in groups called colonies. Each colony can have up to twelve thousand ants living in it.   Harvester Ant  
 
  Mesquite (mess-keet) bushes grow in the same areas where the harvester ants live. Harvester ants eat the seedpods from this bush. In fact, the pods are their favorite food.
  Mesquite bush and ants eating seedpods from this bush  
 
  Another animal that lives in the desert is the horned lizard. This reptile is picky about food. It likes to eat ants and not much else -and harvester ants are at the top of the list.   Horned lizard eating harvester ants  
 
  What eats a horned lizard? It's hard to imagine anything that would want to eat something so spiny. However, hawks, snakes, and foxes will all eat a horned lizard if they are really hungry.   Hawk flying with horned lizard in it's claws  
 
 
  hawk horned lizard harvester ant mesquite pod  
hawk eats horned lizard eats harvester ant eats mesquite pod
 
 
 

So, you can see how this desert food chain works. Each link in the chain needs the other parts to survive. If a farmer pulls out too many mesquite bushes, the harvester ants won't have any food. Then the horned lizards won't have any ants to eat. If the lizards leave to look for ants in another area, a hawk or fox may have to go without a meal.

Harming one part of a food chain can hurt the other parts as well.

 
 
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