Issues Affecting Marine Ecosystems Answers

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It is best to say that marine debris _______.

A
is a hazard to marine animals
B
degrading ocean health
C
a pervasive, global pollution problem
D
all of the above
4

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
5

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6

Marine debris is best described as being composed of _______.

A
solid garbage
B
untreated sewage
C
toxic chemicals
D
things discarded by humans
7

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
9

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10

Which of the following is an impact of fishing on fisheries?

A
an increase of fishery health
B
an increase in fishery populations
C
the discovery of new fisheries
D
none of the above
12

Which of the following is not a goal of the Seafood Watch program?

A
to promote sustainable fishing
B
to identify unsustainable sources of fish
C
to increase fish sales
D
to improve ocean health
13

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

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