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Energy Flow
Bioaccumulation
Carbon Cycle
Nitrogen Cycle
Phosphorus Cycle
100
The total mass of living organisms in an ecosystem
What is Biomass
100
This species plays a significant role in an ecosystem and affects many other organisms
What is keystone species
100
This process occuring in plants takes CO2 from the atmosphere and makes sugar
What is photosynthesis
100
Converting nitrogen in the atmosphere into a form that plants can use by bacteria, algae or lightening
What is nitrogen fixation
100
Breakdown of phosphorus containing rocks to release phosphate to the soil
What is weathering
200
This type of organism is responsible for converting sunlight into energy that is used by other organisms.
What are producers
200
Process where toxins accumulate and become more concentrated at each trophic level.
What is biomagnification
200
The largest store of carbon
What are marine sediments and sedimentary rock
200
Plants that do not live in association with nitrogen fixing bacteria rely on this type of bacteria for nitrogen compounds
What is nitrifying bacteria
200
Human uses of mined phosphorus (2)
What are fertilizer and detergents
300
The different levels in a food chain, pyramid or web.
What are trophic levels
300
The three heavy metals that are toxic to organisms in low concentrations
What are lead, cadmium and mercury?
300
Process that occurs in all organisms where carbon dioxide is returned to the atmosphere and energy for cells is made
What is cellular respiration
300
Unused nitrogen is returned to the atmosphere by this process
What is denitrification
300
Process where dissolved nutrients settle and form rocks
What is sedimentation
400
This type of organism is responsible for 'recycling' organisms and returning nutrients to the soil
What are decomposers
400
Carbon containing compounds usually used as insecticides (eg. DDT)
What are POPs (Persistant Organic Pollutants)
400
Human activity that contributes to CO2 to the atmosphere
What are burning fossil fuel, clearing land, urban expansion or transportation
400
Leaching and run off from nitrogen containing fertilizers leads to this affect on the ecosystem
What is eutrophication
400
Process that brings phosphorus containing sedimentary rocks to the surface
What is geological uplift
500
This model of energy flow shows the loss of energy as it move from organism to organism.
What is a food pyramid
500
The use of living organisms to break down and clean up toxins or pollutants in the environment
What is bioremediation
500
Source of calcium carbonate found in sedimentary rocks
What are marine organisms
500
Why the human body needs nitrogen
What are proteins and DNA
500
Where phosphorus is used in the human body
What is ATP or Bones