Carbon Cycle
Nitrogen Cycle
Phosphorus and Water Cycle
Energy Transfer
Analyzing Food Webs
100
What are the role of plants in the carbon cycle?
Absorbing carbon from the atmosphere for photosynthesis
100
What does it mean for nitrogen to be fixed?
Made available to plants
100
Where can phosphorus NOT be found?
atmosphere
100
Which trophic level is always at the bottom of an energy pyramid?
producers
100
Which organisms are primary consumer in the food web?
Mouse and grasshopper
200
What is the role of animals in the carbon cycle?
Release carbon into the atmosphere during respiration
200
True or false. Plants are able to use nitrogen gas.
False, the nitrogen must be fixed into either nitrates or ammonium ions for plants to be able to use it.
200
What is runoff?
Water moves across the surface of the earth into a larger body of water
200
How much energy is transferred between trophic levels?
10%
200
Which organisms are the secondary consumers in the food web?
Snake, Grasshopper, Vulture, Coyote, and Hawk
300
What is another term for burning fossil fuels?
Combustion
300
What is the role of bacteria in the nitrogen cycle?
converting nitrogen into usable forms for plants and converting nitrogen in the soil back to nitrogen gas
300
What is transpiration?
Evaporation of water from the leaves of plants
300
What is biomass?
Energy stored as tissue
300
If the producer contain 1800 kJ of energy, how much energy would the rabbit receive?
grass --> rabbit--> hawk
180 kJ
400
What happens when there is too much carbon in the atmosphere
Global warming/ climate change
400
What forms of nitrogen are plants able to use?
Nitrates and ammonium ions
400
How does the water cycle affect the phosphorus cycle?
Runoff carries phosphorus from soil and rocks into lakes, rivers, and streams
400
What does the direction of an arrow show you in a food chain?
Ex. Shrub ---> Elk ---> Wolves
who is receiving energy/ who is doing the eating
400
If a shrub contain 2400 kg of biomass, how much biomass would the wolves have?
Shrubs--> Elks --> Wolves
24 kg
500
What human activities have impacted the carbon cycle?
Burning fossil fuels and deforestation
500
What are the two main sources of nitrogen fixation?
Lightning and bacteria
500
What human activities have impacted the phosphorus cycle?
Mining and overuse of fertilizers
500
Who is the primary consumer in the food chain below?
Grass --> Grasshopper --> Hawk --> Coyote
Grasshopper, the primary consumer eats the producer.
500
How will the grasshopper population be affected if coyotes are killed off?
Increase in the grasshopper population due to uncontrolled predation from the hawk population