Populations Flashcards
Give 2 biotic factors
Predation or competition
Define ecosystem
A self contained functional unit made up of all the interacting biotic and abiotic factors in a specific area.
Give 3 abiotic factors
Temperature, rainfall, species
Define population
A group of individuals of the species that occupy the habitat at the same time.
Define community
The organisms of all species that live in the same area.
Define habitat
The place where an organism normally lives, which is characterised by physical conditions and the species of other organisms present.
What is a smaller unit of a habitat?
A microhabitat
Define ecological niche
All conditions and resources required for an organism to survive, reproduce and maintain a viable population.
Where an organism lives and what it does there.
What is the biosphere?
The life supporting layer of land, air and water that surrounds the earth.
