Misc.
Food Webs/Chains
Definitions
Pyramids
Human Impact
100
Moss and small grasses
What are Pioneer organisms?
100
The food chain is broken.
What happens when an organism dies?
100
All of the organisms of one species that exist in a given location at a given time.
What is a population?
100
Found at the bottom of a food pyramid.
What are producers? (autotrophs, plants)
100
When humans use less of something.
What is reduce?
200
Hardwood trees
What is a climax community?
200
grass --> cow --> human
What is a food chain.
200
Dirt, rocks, water, oxygen, carbon dioxide, minerals
What are abiotic factors?
200
Organisms that feed off of the lowest (bottom) level of the energy pyramid.
What are primary consumers? (heterotrophs, herbivores)
200
When humans cut down a forest.
What is deforestation?
300
Fire
What is one way an ecosystem could be destroyed?
300
Put many food chains together.
How do you make a food web?
300
The job and organism has in its environment.
What is a niche?
300
The 10% rule.
What is the amount of energy that is transferred to the next highest trophic level?
300
When humans add gases into the air and it collects to hold in global heat.
What is the greenhouse effect?
400
Species that are not indigenous to a particular area?
What are invasive species?
400
So many different types of organisms in an ecosystem.
What is biodiversity?
400
The global sum of all ecosystems.
What is the biosphere?
400
What is at every level.
Where are decomposers are found in a food pyramid?
400
When humans kill too many of one organism and they are not able to repopulate successfully.
What are endangered species.
500
Two organisms that work together for mutual benefit.
What is mutualism?
500
All of the organisms in a food web or chain rely it as the original source of energy.
What is the sun?
500
Something that prevents an organism from being successful, it can be abiotic or biotic.
What is a limiting factor?
500
5000 to 500 to 50 to 5
What is the change in energy from a lower trophic level to a higher trophic level?
500
Chemicals to kill plants.
What are herbicides?
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