Freshwater and Marine Biomes Answers

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Which of the following phrases describes a typical river mouth?

A
clearer water with high levels of oxygen
B
decreased vegetation and lower oxygen levels
C
increased species diversity
D
high levels of vegetation
3

What discovery was made by Alvin?

A
over 4000 new species of marine life
B
hydrothermal vents
C
the Aqualung
D
the temperature of different parts of the ocean
4

Limnetic, profundal, littoral, and benthic have what in common?

A
They refer to the upper-level zones found in salt- and freshwater ecosystems.
B
They are all zones found in freshwater systems.
C
They refer to the lower-level zones found in salt- and freshwater ecosystems.
D
They are all zones found in saltwater systems.
9

Waste disposal, food source, medicines, medicinal therapies, and aquaculture are all ways _______.

A
humans impact the marine environment
B
humans utilize marine resources
C
marine environments have impacted humans
D
all of the above
11

Which of the following phrases describes a typical river mouth?

A
clearer water with high levels of oxygen
B
decreased vegetation and lower oxygen levels
C
increased species diversity
D
high levels of vegetation
15

The littoral is a zone identified in lakes and ponds and is the coldest because it is shallow and lacks nutrients to support life. Please select the best answer from the choices provided

A
T
B
F
17

Understanding the salinity of aquatic environments is unimportant in understanding the overall ecosystem.

A
T
B
F
18

Waste disposal, food source, medicines, medicinal therapies, and aquaculture are all ways _______.

A
humans impact the marine environment
B
humans utilize marine resources
C
marine environments have impacted humans
D
all of the above
19

Saltwater fish constantly drink water but still excrete concentrated urine to compensate for the water loss. They also have gills to help excrete excess salts. Conversely, freshwater fish absorb salt from their surroundings using their gills and their bodies reabsorb salt from their urine. This describes how salt- and freshwater fish _______.

A
use their gills to drink
B
keep the salinity levels even in their aquatic environments
C
have adapted to deal with osmosis
D
have evolved behavior patterns to match their physiology
20

What discovery was made by Alvin?

A
over 4000 new species of marine life
B
hydrothermal vents
C
the Aqualung
D
the temperature of different parts of the ocean

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