Cycles/Succession
Population Dynamics
Flow of energy in an ecosystem
Aquatic ecosystems
Biodiversity
100
Electric power plants that burn fossil fuels generate billions of tons of carbon dioxide and other gases. How might replacing these power plants with solar cells affect the environment?
Less carbon dioxide would be released into the atmosphere
100
What is the carrying capacity of the species?
2000
100
What is the difference between a food chain and a food web?
Food chain is linear and more simple vs. a food web is more complex and contains multiple food chains
100
Which zone receives the most sunlight?
Photic zone
100
The pH of the water in several lakes in Norway and Sweden had decreased from 7.5 to below 5.0 due to an increase in acid rain. Which of the following is most likely to happen in these lakes?
Increased death rate of fish populations
200
New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. What is the purpose of this research?
reduce the use of fossil fuels
200
Name a secondary consumer 
Frog, Dragonfly, Thrush, Rat, etc.
200
Removing which type of organism (producer, primary consumer, secondary consumer, etc.) would have the most impact on an ecosystem?
Producer
200
Describe the benthic zone
Bottom of the ocean floor, dark, high pressure, hydrothermal vents
200
What allows for an invasive species to take over an ecosystem?
No natural predators present and no limiting factors such as disease.
300
Describe what a climax community looks like after succession has taken place in an ecosystem?
full grown mature trees
300
A finite resource in the environment that keeps a population from steadily increasing is known as
a limiting factor
300
What is a detritivore?
An organism that feeds on dead remains
Ex: worms, vultures, etc.
300
In what zone would you find most marine creatures that are mobile?
Pelagic zone
300
What are examples of nonrenewable resources?
Oil, gas, coal, etc.
400
What is an example of a pioneer species?
Lichen or small plants
400
True or false?
An ecosystem only contains biotic factors?
False
400
How much energy is transferred between trophic levels?
10%
400
In what type of aquatic ecosystem would you find brackish water?
Estuaries
400
Describe biomagnification
Toxic substances become more concentrated as you go up trophic levels in an energy pyramid.
500
What are the two main processes involved in the carbon cycle?
Photosynthesis and cellular respiration
500
Provide an example of a density independent factor
weather
500
What happens to the energy that is not transferred between trophic levels?
It is lost as heat and recycled back into the ecosystem
500
Organisms in the photic zone carry out the process of _________ and organisms in the benthic zone carry out the process of ________
Photosynthesis and Chemosynthesis
500
Provide three examples of threats to biodiversity
Eutrophication, Habitation destruction, Overexploitation, pollution, habitat fragmentation, acid rain, invasive species, etc.