Week 13: Issues Affecting Marine Ecosystems Answers

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Explain why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris.

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2
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Describe the sources of marine debris and explain why it is a problem with global origins.

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3

Which of the following best explains why overfishing is considered a bad practice?

A
Overfishing is not sustainable and ultimately depletes a fishery.
B
Overfishing is a more expensive fishing practice.
C
Overfishing results in species becoming overpopulated.
D
Overfishing prevents the formation of protected habitats.
4

By-catch is a term for that part of the catch _______.

A
that is used to feed the ship’s crew
B
caught at the lowest depths
C
that was actually being fished for
D
that was not actually being fished for
5

Marine debris typically _______

A
sickens, injures, or kills marine animals
B
improves water quality
C
is not a problem for marine organisms
D
originates from landlocked sources
6

Explain how Seafood Watch promotes environmentally responsible fishing practices.

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7

The current responsible for holding the Great Pacific Garbage Patch together is called _______.

A
the North Pacific Gyre
B
the South Pacific Gyre
C
the North Atlantic Gyre
D
the South Atlantic Gyre
8

Explain why bottom trawling is still being practiced when it is generally acknowledged as destructive and unsustainable?

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9

Seafood Watch recommends which seafood _______.

A
to buy or avoid
B
to catch and sell
C
to harvest sustainably
D
is safe to eat
10

Explain how a policy strategy to reduce, reuse, and recycle might mitigate the impacts of marine debris.

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