Ecosystems- year 9

Biosphere

A layer around the Earth’s surface that supports life, consists of the atmsphere,hydrosphere and lithosphere. It is where all the plants, insects and animals live.

Abiotic

Non-living component of ecosytem, eg. water, weather, shealer.

Biotic

Relating to the living organism in an ecosytem.

Population

The term used when a number of a single species live in an area toegther. 

Community

A group of different species, two or more.

Benefits of an ecosystem

Withstand natural disaters or removal of species, maintain balance of gases in atmosphere, polination of plants; organic matter decomposed; water cleaned.

Collaboration

A relationship between organism of the same species working toegther to ensure their survival. 

Mating

The paring of a male and female of a species to produce offspring (babies).

Competition

A type of relationship between organism using the same limited resources in an ecosystem.

Symbiois

A close physical relationship between two organisms of different species. 

Mutalism

A type of realtionship between two organism of different species in which both organism benefit.

Commensalism

A type of relationsip between two organisms of dafferent species, in which one organism benefits and the other is not affected. (rare)

Parasitism

A relationship in which one oranis (parasite) ives in or on the body of the other oranism (host) and benefits while he host is harmed.

Diease vector

A living organism that can transmit infectious diease between humans, or from animals to humans.

Predator

An animal that hunts and feeds on another (prey) for food.

prey

An animal that is hunted and killed by another (predator) for food.

Is prey and predator symbiois?

Not symbiotic, because the relationship between the organism is not long term, and it only happens when predator is hungry,

Equilibruim

balance

Dynamic

Constantly moving

Biological control

A method of controlling a population by releasing a living organism (a parsite or consumer) into an ecosytem.