AnswersFL-2001340-Environmental Science Sem 2Salt Marshes and Mangroves

Wetlands Answers

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1
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Which of the following does not explain the importance of mangrove forests?

A
They provide shelter to organisms on high energy coasts.
B
They help prevent erosion along coasts.
C
They increase surface runoff and flooding.
D
They filter and process pollutants out of the environment.
2
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Which of the following is not true concerning salt marshes?

A
Historically they were drained for agriculture.
B
Historically they were drained for development.
C
Salt marshes are not productive habitats.
D
Remaining marshes are severely degraded.
3

Mangrove have two types of specialized root systems.

A
T
B
F
4

Mangrove forests were traditionally viewed as unhealthy, unproductive environments.

A
T
B
F
5

How has human use of salt marshes changed over time?

A
Humans have come to value salt marshes and now seek to preserve and restore them.
B
Humans now use drained salt marshes exclusively for agriculture.
C
Humans have begun to use salt marshes for landfills.
D
Humans have begun to use marsh land for housing and commercial development.
6

Salt marshes are found _______.

A
at high elevations
B
away from the coast
C
on high energy coastlines
D
on low energy coastlines
7

Which of the following is a benefit of having a healthy salt marsh?

A
Salt marshes provide a habitat for juvenile fish.
B
Salt marshes act as a buffer for storms.
C
Salt marshes support marine life found in estuaries.
D
All of the above
8

Mangrove pneumatophore roots _______.

A
prop the trees up above the water line
B
excrete excess salt
C
absorb carbon dioxide from the air
D
none of the above
9

The animals in salt marshes use the marshes for _______.

A
breeding grounds
B
nurseries
C
protected habitat
D
all of the above
10

The traditional view of mangrove forests as wastelands and unhealthy environments helped promote their degradation because _______.

A
mangrove forests are unproductive, unhealthy habitats
B
people did not feel it was necessary to preserve them
C
mangrove forests do not need to be preserved
D
all of the above
11

The traditional view of mangrove forests as wastelands and unhealthy environments helped promote their degradation because _______.

A
mangrove forests are unproductive, unhealthy habitats
B
people did not feel it was necessary to preserve them
C
mangrove forests do not need to be preserved
D
all of the above
12

Why do many fishermen support efforts to protect and restore mangrove forests?

A
Most fishermen are environmentalists.
B
Many fish breed in mangrove forests.
C
They lay their nets in mangrove forests.
D
Mangrove forests provide valuable hardwoods.
13

Mangrove forests help mitigate storm damage.

A
T
B
F
14

The salinity in salt marshes can vary throughout the day because _______.

A
river flow changes throughout the day
B
the amount of salt water in a marsh depends upon ocean tides
C
daily winds and rains result in salt and fresh water mixing
D
salt water collects in the lowest elevations
15

Why do many fishermen support efforts to protect and restore mangrove forests?

A
Most fishermen are environmentalists.
B
Many fish breed in mangrove forests.
C
They lay their nets in mangrove forests.
D
Mangrove forests provide valuable hardwoods.
16

Salt marshes typically sit above the high tide mark.

A
T
B
F

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