AnswersDRHS GA-GSE Environmental ScienceHuman Events and the Environment

Human Events and the Environment — Unit test Answers

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Sedimentation accumulation found in bodies of water can be the result of _______.

A
fertilizer runoff
B
pesticides and herbicides
C
erosion from agricultural practices
D
all of the above
2
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The inversion of terrestrial and aquatic energy pyramids is dependent upon the nature of that environment’s particular _______.

A
decomposers
B
climate
C
primary consumers
D
producers
3

Consider the following food chain:Garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat.

A
A
B
B
C
C
D
D
4

Which of the following best explains why deforestation increases the risk of floods in an area?

A
Tree leaves catch and retain rain water.
B
Trees block the free flow of water.
C
Deforestation increases precipitation.
D
Tree roots improve soil water retention.
5

Hurricanes are more destructive than tornados due to _______.

A
coastal storm surges
B
their shorter duration
C
the combination of high winds and flood waters
D
all of the above
6

If a stationary body of water has a constant temperature from top to bottom it is most likely a(n) _______.

A
lake
B
pond
C
ocean
D
lagoon
7

Which of the following typical adaptations of marine animals is not found in sea otters?

A
streamlined body
B
webbed hands and feet
C
body covered in thick fur
D
breathing apparatus on the top of the head
8

The marine biome is the largest of all the ecosystems.

A
T
B
F
9

Which of the following is not an example of interactions between biotic and abiotic factors in an ecosystem?

A
flowers opening at dawn and closing at night
B
bears hibernating in winter
C
male elk fighting over a female
D
Monarch butterflies migrating to Mexico for the winter
10

It is advantageous for a predator to prey exclusively on a single prey species.

A
T
B
F
11

Variation of ecological habitats within a species is characteristic of which type of diversity?

A
Genetic diversity
B
Ecosystem diversity
C
Species diversity
D
Regional diversity
12

Changes to _______ can be ascribed to glacial melting.

A
Earth’s surface
B
CO2 levels
C
coral reefs
D
water pollution
13

How can an increase in biodiversity lead to an increase in ecosystem stability?

A
A more biodiverse ecosystem is not subject to change.
B
A more biodiverse ecosystem has a higher chance of adapting to species changes.
C
A more biodiverse ecosystem has fewer species types to balance.
D
A more biodiverse ecosystem is subject to fewer natural disasters.
14

Why are catfish and carp found at the mouth of a river, while trout are found nearer the source?

Answer not available
15

Explain how the disposal of human waste could worsen the effects of hurricanes on coastal communities.

Answer not available
16

Which of the following is a specialist species?

A
Giant Pandas
B
Horses
C
Humans
D
Rabbits
17

A quaternary consumer species would be expected to have a smaller population than a secondary consumer species.

A
T
B
F
18

While trees are not the largest level in the pyramid of numbers, they are still the base for both the pyramids of biomass and pyramids of energy.

A
T
B
F
19

Explain which three marine habitats would have the least access to phytoplankton, and why.

Answer not available
20

Which process is performed by both plants and animals to break down sugars to provide energy in the form of ATP?

A
photosynthesis
B
cellular respiration
C
consumption
D
decomposition

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