Unit 4

ga­

�ral

ght ieC­

ek­ red 1ng

,rps .on ;pe­ im? 'hat

Jrps

........... '"'..:, u.11u L11utula1 penalties

2. Under a 2007 mandate from Congress, the Army C orps of Engineers conducted a two-year study, called the Great Lakes and Mississippi River Interbasin Study, of the problem of Asian carp entering the Great Lakes via Chicago's web of waterways. Asian carp are known as a "nuisance species" that quickly gobbles up the plankton, thereby threatening the food source of the sport fish in the lakes. Conservation groups want the Corps to block the access ways as quickly as possible, but sports fish­ ers and commercial shipping companies worry that the impact of blocking the flow of the waterways will have on the lakes. The Corps' 210-page study estimates the cost of blocking the waterways at $18 billion. Explain what needs to be done under these circumstances and how the Corps should proceed. (Michael Wines, "$18

ii :1

'

'

. l