Eutrophication is caused by _______.a.an increase in nutrientsb.a decrease in nutrientsc.the introduction of new species of animalsd.the introduction of new species of plants
Why has the spread of the herbicide-resistant hydrilla through Florida’s waterways resulted in them no longer being navigable by most boats?a.Thy hydrilla has induced a drought that drained the waterways.b.The weed clogs propellers that boats use for propulsion.c.The sticky leaves of the weed hold boats in place.d.All of the above
Sewage is the most common form of pollution in rivers and streams.
How does current affect biodiversity in rivers and streams?a.It prevents bacteria and algae from living in rivers and streams.b.It causes a decrease in biodiversity by preventing organisms from remaining in rivers and streams.c.It mixes the nutrients for plant and animal use and determines location of organisms.d.It has no affect on biodiversity.
Which of the following is not a goal of the Seafood Watch program?a.to promote sustainable fishingb.to identify unsustainable sources of fishc.to increase fish salesd.to improve ocean health
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