Topic 9 - Ecosystems And Material Cycles Flashcards
Define resources
What animals need to survive
Define ecosystem
All the organisms and their environment
Define community
All the species in an ecosystem
Define population
The number of one species in an ecosystem
Define interdependent
When the species effect eachother
Define habitat
Where one particular species lives
Define abundance
How common a species is
What is a food web
Several food chains that interact with eachother
How do you estimate a population
Total number of organisms in a sample X (study area ÷ total area)
What are abiotic factors
Non living factors
What are biotic factors
Living factors
What is a parasitic relationship
Where one organism benefits at the expense of the others
What is a mutualistic relationship
Where both organisms benefit from living together
What is a commensalism relationship
Where one organism benefits and the other is not harmed
What is an indigous species
One native to that area
