what are the natural resources in wisconsin?
Wisconsin gubernatorial recall election
entailment
 Purely natural sources were insufficient in some areas and additional steps taken to increase supplies . In New England , holes were drilled in the ice to promote the thickening of the surface . Alternatively , artificial lakes were created in some areas , and guidance was published on how best to construct the dams that lay at the heart of these designs . Low @-@ lying , boggy land was dammed and flooded in Maine towards the end of the century to meet surge demands , while pre @-@ existing artificial mill ponds in Wisconsin turned out to be ideal for harvesting commercial ice . In Alaska , a large , shallow artificial lake covering around 40 acres ( 16 hectares ) was produced in order to assist in ice production and harvesting ; similar approaches were taken in the Aleutian islands ; in Norway this was taken further , with a number of artificial lakes up to half a mile long built on farmland to increase supplies , including some built out into the sea to collect fresh water for ice . 

entailment
 At the beginning of the twenty @-@ first century , the region 's agricultural and horticultural production was worth more than A $ 1 billion . The region produces : 

neutral
 Wisconsin : Illinois , Penn State 

entailment
 Both native and non @-@ native tree saplings are grown within the forest . Trees officially allowed to be sold for lumber within the state forest are between 70 and 100 years old . Often , the chosen trees are felled to provide an area for native deer to live in the open , and to give smaller animals a brush area for their subsistence . Included in some protected areas are the White Oak ( 160 acres or 0 @.@ 6 km2 ) and the Chestnut Oak / Virginia Pine ( 20 acres ) Nature Preserves . Other species of tree include black oak , black walnut , pignut hickory , sugar maples , and tulip trees . North of the Schlamm Lake is a fish hatchery . 

entailment
 The Glacier Bay Basin is now a myriad combination of tidewater glaciers , snow @-@ capped mountain ranges , ocean coastlines , deep fjords , and freshwater rivers and lakes that provide widely varying land and seascape and “ hosts a mosaic of plant communities and a variety of marine and terrestrial wildlife . ” 
