AnswersIC Sem B Environmental SystemsStreams and Rivers

Streams and Rivers Answers

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1
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What characteristic sets streams and rivers apart?

A
water quality
B
direction of flow
C
size
D
biodiversity
2
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How has the removal of wetlands impacted rivers and streams?

A
It has increased the rate of absorption, causing a decrease in water levels.
B
It has decreased the rate of absorption, causing greater incidents of flooding.
C
It has hindered the migration of fish, causing a loss in biodiversity.
D
Wetland removal has had no measurable impact on rivers and streams.
3

Where does the water in streams and rivers originate?

A
precipitation
B
runoff
C
ice and snowpacks
D
all of the above
4

Rooted aquatic plants can be found in areas with lower sunlight exposure.

A
T
B
F
5

The organisms found in rivers and streams vary based on location.

A
T
B
F
6

Where is oxygen content in a river or stream likely to be highest?

A
the source
B
the mouth
C
the middle portion
D
none of the above
7

Which of the following is a way that humans impact rivers and streams?

A
pollution
B
dams
C
flooding
D
all of the above
8

Currents shape rivers over long periods of time.

A
T
B
F
9

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.
10

Dams have a limited effect on rivers and streams.

A
T
B
F
11

Streams have a detectable current, while rivers do not.

A
T
B
F
12

Streams have a detectable current, while rivers do not.

A
T
B
F
13

Rivers are more important to the water cycle than streams.

A
T
B
F
14

How does access to sunlight affect the biodiversity of a river ecosystem?

A
Sediment is limited in areas with little access to sunlight.
B
Plant and animal life is limited in areas with little access to sunlight.
C
Algae is more common in areas with less access to sunlight.
D
Biodiversity is unaffected by access to sunlight.
15

Where does the water in streams and rivers originate?

A
precipitation
B
runoff
C
ice and snowpacks
D
all of the above
16

Which of the following is a way that humans impact rivers and streams?

A
pollution
B
dams
C
flooding
D
all of the above
17

Where is oxygen content in a river or stream likely to be highest?

A
the source
B
the mouth
C
the middle portion
D
none of the above
18

How has the removal of wetlands impacted rivers and streams?

A
It has increased the rate of absorption, causing a decrease in water levels.
B
It has decreased the rate of absorption, causing greater incidents of flooding.
C
It has hindered the migration of fish, causing a loss in biodiversity.
D
Wetland removal has had no measurable impact on rivers and streams.
19

The organisms found in rivers and streams vary based on location.

A
T
B
F
20

Fish that feed on sediment will most likely be found in _______ rivers.

A
shallow
B
narrow
C
deep
D
fast-moving

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