AnswersFranklin_1st_GA-GSE Environmental ScienceOrganizational Hierarchy

Populations and the Environment Answers

0 verified answers
1
Free Preview

Which factor can cause secondary succession?

A
clear cutting
B
glacial melting
C
competition
D
predation
2
Free Preview

Which factors involving the activities of people are a threat to biodiversity?

A
pollution and succession
B
habitat loss and predation
C
poaching and habitat loss
D
succession and poaching
3

The diagram below shows the stages of succession in a forest ecosystem. Which area shows the climax community of secondary succession?

Question illustration
A
A
B
B
C
C
D
D
4

Which is one event that may lead to Primary succession?

A
clear-cutting
B
climate change
C
volcanic eruption
D
introduced species
5

Which statement best describes ecological succession?

A
It is always caused by human intervention.
B
It occurs after a disturbance.
C
It never occurs in a predictable pattern.
D
It is a series of rapid changes in an ecosystem.
6

According to the pie chart, which cause results in the most extinctions?

Question illustration
A
other
B
introduced species
C
habitat loss
D
hunting and poaching
7

How does a whale fall community affect ocean sediment?

A
The decomposition of the whale enriches the sediment.
B
The remains of the whale pollute the sediment.
C
The sediment is transformed into food for mussels and crabs.
D
The bacteria that are attracted break down the sediment nearby.
8

Which of the following could result in the extinction of a species?

A
harsh restrictions on poachers
B
increase in the habitat size of a species
C
adding a new species to the habitat
D
decrease tourism in protected areas
9

Which bar graph best represents the provided data?Cause of extinctionPercentage of total extinctionsIntroduced species39Habitat loss36Hunting and poaching23Other 2

A
A bar graph titled Threats to Biodiversity shows cause of extinction on the horizontal axis and percent of total extinctions on the vertical axis. Introduced species, 39 percent; Hunting and poaching, 36 percent; Habitat loss, 23 percent; Other, 2 percent.
Option A
B
A bar graph titled Threats to Biodiversity shows cause of extinction on the horizontal axis and percent of total extinctions on the vertical axis. Introduced species, 40 percent; Hunting and poaching, 20 percent; Habitat loss, 40 percent; Other, 0 percent.
Option B
C
A bar graph titled Threats to Biodiversity shows cause of extinction on the horizontal axis and percent of total extinctions on the vertical axis. Introduced species, 39 percent; Hunting and poaching, 2 percent; Habitat loss, 36 percent; Other, 0 percent.
Option C
D
A bar graph titled Threats to Biodiversity shows cause of extinction on the horizontal axis and percent of total extinctions on the vertical axis. Introduced species, 39 percent; Hunting and poaching, 23 percent; Habitat loss, 36 percent; Other, 2 percent.
Option D
10

On May 18, 1980, Mount St. Helens in Washington State experienced a huge volcanic eruption after a magnitude 5.1 earthquake. During the eruption, hot ash and pumice poured down the west, south, and east sides of the mountain, melting the snow and ice at the top of the volcano and producing volcanic mudflows. Which type of process first occurred in the ecosystem around Mount St. Helens after it erupted?

A
primary succession
B
secondary succession
C
a climax community
D
species extinction

Did you find these answers helpful?

More from this Course

Quiz
9 verified answers

Organizational Hierarchy

Quiz
2 verified answers

Biomes

Quiz
1 verified answers

Organizational Hierarchy