Solved by a verified expert:Lesson 8 Short Answer Drop Box
SHORT ANSWER
QUESTIONS:
Utilize the following
resources to complete this assignment: Krakatau,Mt. St. Helens, bubbl.us,World Population: More Than Just Numbers, and U.S. Census Bureau:
International Data Base (IDB).
Save your assignment
with your last name and the assignment name. For example “Smith Unit
8 SAQ” and then upload your work by clicking Browse (items should be
saved as .doc, .docx or .rtf).
Your goal is to
demonstrate your knowledge. Do this by explaining EVERYTHING fully. Some
questions require you to complete research and supply evidence including
citations and a reference.
All answers should be original
and authoredby you.
Answer the questions/prompts using your readings and any other
appropriate source.
Ecological Relationships
I. Predator/Prey
One famous ecological relationship is
between the Canadian lynx (predator) and the snowshoe hare (prey). Data on these two species was collected by
the Hudson Bay Company for their pelt-trading records. Below is a data set and figure from their
records. from 1900 – 1920.
TYPE ANSWERS HERE
1. Reviewing the data and figure
above what are two patterns that you see?
2.
Do the peaks of the predator population
____________ those of the prey population?
a.
match
b.
lead
c.
follow
3.
Which of the following figures would be most
likely represent the previous 20 years of data?
a.
b
c.
4. What
is a potential drawback to using the pelt data to represent the population
numbers?
5.
Hares
populations increase until they have consumed all available grazing material. In the short term, a graph of their
population may resemble the one below.
What type of growth is pictured here?
6.
What
are 2 factors that would limit the population of hares resulting in the
actual data that is seen? Complete
research to answer this question and include internal citation and a reference.
7. Many plants produce secondary
compounds — chemicals which make browsable plants less palatable and
nutritious in response to browsing.
What would be the result of an increase in these compounds on the Hare
population? Complete research to
answer this question and include
internal citation and a reference.
II.
Succession:
Read about the volcanic explosions of Krakatau
(1883) and Mt.
St. Helen’s.
TYPE ANSWERS HERE
Name three methods by which plants
and animals might reach an entirely barren island such as Krakatau. Complete
research to answer this question and include internal citation and a reference.
What is one organism that might use
each of the methods you listed in the question above. Complete research to answer this
question and include internal
citation and a reference.
10. LikeKrakatau, Mount St. Helens in Oregon was completely devoid of life after
its eruption in 1980. How would you
expect the succession/recolonization of the Island
of Krakatau by plants and animals to differ from that of Mount St. Helens?
III. Producers, Consumers, & Food
Webs
11. Using the bubbl.us site, create a food web (not a food
chain) by following the parameters below.
a. You food web should have 4
tropic levels.
b. Each tropic level should be a different
color, list the colors you use below.
Producer:
Primary Consumer:
Secondary Consumer:
Tertiary Consumer:
c. Include example organisms for
each level.
INSERT FOOD WEB HERE
TYPE ANSWERS HERE
12. How much energy moves from one
level to the next? Complete research to answer this question
and include internal citation and
a reference.
13. How does this energy flow
affect the number of levels a food web can have? Complete research to answer this question and include internal citation and a reference.
14. Because limited energy is
available to the top consumers on a food web, how does this affect the
territory size of these large consumers?
Complete research to answer
this question and include internal
citation and a reference.
15. What is a specific example of how a
conservationist would use their knowledge of ecological topics such as
predator/prey relationships, succession and food webs in conservation? Complete research to answer this question
and include internal citation and
a reference.
You will be utilizing the information in “World Population: More Than Just Numbers”
(pgs. 7, 10 – 13 [The titles of these pages are: There have never been so
many young people, Women’s lives are changing & More people affect the
environment]), the web site, “U.S. Census Bureau: International Data Base (IDB)”
and any other appropriate source to answer the questions below.
TYPE
ANSWERS HERE
16. Once in the IDB under “Select
report” drop down menu, choose the population pyramid graph. Then select
(one at a time) Afghanistan,
Italy,
and the United States
and list the shapes of the graphs for these countries in 2011. Possible
answers: PYRAMID, COLUMN, UPSIDE-DOWN PYRAMID, COLUMN stacked with a PYRAMID,
etc.
Afghanistan:
Shape?
Italy:
Shape?
United States: Shape?
17. Explain what the shapes of the population
pyramid/age structure diagram tell about future population growth for each
country. What evidence from the research supports your answer? Complete research to answer this question
and include internal citation and
a reference.
Afghanistan:
Italy:
United
States:
18. Based on your readings, how would you expect
a program to increase the education of women within the population to lead to
changes in the shape of the population pyramid? Explain your answer. What
evidence from the research supports your answer? Complete research to answer this question and include internal citation and a reference.
19. There are multiple methods of population
control (contraception, abstinence, limiting number of children,
sterilization, education, etc.). What strategy would be most effective (socially and/or biologically) in controlling population
growth in undeveloped countries? What evidence from your independent research
supports your answer? Complete
research to answer this question and include internal citation and a reference.
20. What strategy would be least effective (socially and/or biologically) in controlling
population growth in undeveloped countries? What evidence from your research
supports your answer? Complete
research to answer this question and include internal citation and a reference.
References
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