Ecosystems and Material Cycles Flashcards
(14 cards)
What are the different levels of organisation?
Individual
Population
Community
Ecosystem
Individual
A single organism
Population
All the organisms of one species in a habitat.
Community
All the organisms of different species living in a habitat.
Ecoysystem
A community of organisms along with all the non-living conditions.
What is Interdependence?
When organisms depend on each other for things like food and shelter in order to survive and reproduce.
Interdependence means that a change in the population of one species can have…
huge knock on effects for other species in the same community.
What is mutualism?
A relationship between two organisms, from which both organisms benefit.
What are parasites?
Live very closely with a host species. The parasite takes what it needs to survive, but the host doesn’t benefit.
What does abiotic mean?
non-living
What does biotic mean?
living
What are the 4 Abiotic factors which affect communities?
Temperature
Amount of water
Light intensity
Levels of pollutants
What are the 2 biotic factors which affects communities?
Competition
Predation
