Ecosystems Flashcards
What is a ecosystem?
An area in which all the living organisms and all the non-living physical factors in an area form a stable relationship
Pond or tropical rainforest
Population
The number of particular spices in an area
world population or frogs
Interdependence
When organisms in an area need each other for things like food and water
bees and flowers
Habitat
The plance in which an organism lives
House, cave
Community
All organisms of different species in a habitat
All living things on earth
Resources
Something that an organism needs to stay alive
Oxygen, nutrience or water
Abundance
A measure of how common somethinf is in an area such as population size
We can use a quadrat
Species
A species is a group of similar organisms that can reproduce to give fertile offspring
What is mutalism
A relationship between two organisms from which both orgamisns benifit
What is parasitism
The relationship where one organism benifits by feeding off the host organism, causing harm to the host
For example headlice in humans (sucking our blood)
What does compotition mean?
Organisms compete with other spieces (and members of their own speices) for the same resourse
For example, food
What are abiotic factors?
Temperature
Amount of water
Light intensity
Levels of pollutants
Native/indigenous
Organisms that have always been in an area/country
Non-indigenous
Organisms that have been introduced into an area and were not always found there
Eitrophication
The addition of more nutrience to an ecosystem then it normally
