Population Propositions
Ecosystem Exploration
Vexing Vocabulary
Food Web Fiasco
Interesting Interactions
100
Occurs when the birth rate surpasses the death rate. 
What is a rise in the population? 
100
All the living things within an ecosystem.  
What is community? 
100
Describes any living thing. 
What is an organism? 
100
Nearly all the energy that passes through our ecosystems come from here.  
What is the sun?  
100
This relationship occurs when one organism benefits, while another is neither benefited or harmed. 
What is commensalism?
200
These control a population and can be living or nonliving.  
What are limiting factors?
200
The largest population that an ecosystem can support.
What is carrying capacity?  
200
A model that illustrates the direction and flow that energy and materials take as they move throughout an ecosystem.  
What is a food chain/web? 
200
The role of the autotrophs in our ecosystem.  
What are producers?  
200
Limiting factors often drive this interaction where two different species rely on the same resource.  
What is competition?
300
Used to describe the number of organisms of the same species in an area of a specific size.  
What is population density? 
300
Word that describes the nonliving parts within our ecosystem.  
What are abiotic factors?  
300
Occurs when organisms of different species interact and at least one participant benefits.  
What is symbiosis? 
300
The amount of energy that is passed from one trophic level to the next.  
What is 10%?
300
The organism that a parasite lives on or in.  
What is a host? 
400
A limiting factor that occurs regardless of population density.
What is density independent limiting factor?  
400
An environment that contains all the things an organism needs to live, grow, and reproduce.  
What is a habitat?  
400
Used to describe the biotic and abiotic factors within a specific area of land.  
What is an ecosystem? 
400
The amount of this that is passed on helps to ensure that our food chains do not grow too long.  
What is energy? 
400
The relationship that occurs between an Acacia tree and a colony of ants. 
What is mutualism?  
500
Type of population growth that occurs under ideal conditions.  
What is exponential growth?  
500
Model that works to show how much energy moves from one trophic level to the next. 
What is an energy pyramid?  
500
Used to describe an organism's role within an ecosystem.
What is a niche? 
500
The levels or links within our food chain/food web.  
What are trophic levels? 
500
The relationship occurs when one living thing consumes another as an energy source.  
What is predation?
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