Name ___________________________________
Period_______________________________
Ecology Webquest
Populations
http://www.geography4kids.com/files/land_population.html
What is population?
List two things that increase a population:
List two things that decrease a population:
Humans and dogs live together, are they part of the same population? Why or why not?
Human population growth: http://desip.igc.org/mapanim.html
Watch the animation then answer the following questions:
Where in the world did the human population appear to start?
What was the world population in 1985?
What is the expected world population in 2020?
https://sites.google.com/site/humanpopulationgrowthwebquest/home/human-population-group-a
Describe the factors that affect population growth.
What is the formula for human population change?
http://www.learner.org/courses/envsci/unit/text.php?unit=5&secNum=5
What are the three major, interconnected elements to human societies impact
on the environment?
What are the two major forms of impact on the environment?
What are some countries doing to try to reduce the rate of population growth?
Limiting Factors
http://www.geography4kids.com/files/land_population.html
Explain each of the 3 limiting factors listed on this site:
1.________________________-
2.________________________-
3.________________________-
Ecology in a sustainable future:
http://www.childrensuniversity.manchester.ac.uk/interactives/science/energy/renewable/
Answer the questions while clicking through the animation
What is a nonrenewable resource?
What is a renewable resource?
Why is the sun renewable but oil is nonrenewable?
How is fresh water both a renewable and a limited resource?
Carbon Cycle
http://www.windows2universe.org/earth/Water/co2_cycle.html
Diagram (draw and label) the carbon cycle:
Name 2 places on the earth we find carbon
Plants pull carbon (in the form of carbon dioxide) from the atmosphere to make food, through a process called
____________________.
When plants and animals die and ____________, carbon goes back into the ground.
Some carbon is buried deep in the ground and forms ________________________.
When humans burn fossil fuels, ________________ is released back into the atmosphere.
When humans and animals exhale, they release carbon back into the air by a process called
______________________________.
Nitrogen Cycle
http://www.windows2universe.org/earth/Life/nitrogen_cycle.html
Diagram (draw and label) the nitrogen cycle:
What are 2 ways nitrogen becomes useable to plants, humans and animals?
How do herbivores obtain the nitrogen they need?
How is nitrogen returned to the atmosphere?
What are two ways humans impact the nitrogen cycle:
Ecological Succession: http://www.geowords.org/ensci/imagesbook/04_03_succession.swf
How is primary succession different from secondary succession?
Describe the example of secondary succession indicated in the simulation
How does the rate of secondary succession compare to primary succession?
http://bcs.whfreeman.com/thelifewire/content/chp55/55020.html
Visit the link above, read the introduction, watch the animation, take the quiz, and answer the following questions:
What are some of the “pioneer” species in glacial moraines?
How do alder trees affect nitrogen content in soil?
How do the alder trees influence spruce tree growth?