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An annual census of wolves at Yellowsto ne National Park has found a sharp drop in the population. B...

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the pups are immune from  only spreads among domestic dogs  is hardy enough to keep alive for months in the soil  only hits wolves on the northern range  
hunting  fights among packs  vehicles  Canine parvovirus  
the pups are immune from  only spreads among domestic dogs  is hardy enough to keep alive for months in the soil  only hits wolves on the northern range  
hunting  fights among packs  vehicles  Canine parvovirus  
seen  told  heard  found  
they will vaccinate the wolves  they have no method to deal with the disease  they will build up a natural resistance  they will not take any measure  
a small town  a big city  a far place  a large village  
devastating  natural  adjustable  abnormal  
the big litter is the cause of wolves’ decline  the scarce of food leads to wolves’ decline  parvo helps wolves to deal with overpopulation problem  wolves have trouble killing enough m feed  
the big litter is the cause of wolves’ decline  the scarce of food leads to wolves’ decline  parvo helps wolves to deal with overpopulation problem  wolves have trouble killing enough m feed  
they will vaccinate the wolves  they have no method to deal with the disease  they will build up a natural resistance  they will not take any measure  
Wolves are afraid of us    The fact that wolves afraid men     The fact that wolves are afraid of men    Wolves’ afraid of men  

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