Issues Affecting Marine Ecosystems Answers

Marine debris mostly originates from oceangoing ships.

Which of the following best explains why marine debris is not caused solely by countries bordering the ocean?a.Marine debris mostly originates from oceangoing ships.b.Debris is carried to the ocean by winds, rivers, and storms.c.Marine debris originates from natural sources.d.None of the above

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Which of the following best explains the environmental problems associated with trawling?a.Trawling always destroys sea floor ecologies.b.Trawling gathers fish indiscriminately.c.Trawling is too selective at gathering fish.d.All of the above

The Great Pacific Garbage Patch will be difficult to physically clean up because _______. a. it lies in international waters b. no single nation is responsible for creating it c. filtering out the plastic will also remove plankton d. all of the above Please select the best answer from the choices provided

Marine debris is best described as being composed of _______.a.solid garbageb.untreated sewagec.toxic chemicalsd.things discarded by humans

It is best to say that marine debris _______.a.is a hazard to marine animalsb.degrading ocean healthc.a pervasive, global pollution problemd.all of the above

Which of the following is an impact of fishing on fisheries?a.an increase of fishery healthb.an increase in fishery populationsc.the discovery of new fisheriesd.none of the above

Long line fishing, drift nets, and trawling all produce an insignificant amount of by-catch.

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