Ecology
               Ecology: Is the scientific study of the distribution and abundance of living organisms.                       

                Ecosystems: is a community of living and non living things that work together.

Diversity means that different  species that all live in the same area.  For example the great white owl , chipmunk , squirrel,rabbit,or a fox all live in the forest.  The greater the diversity the healthier the ecosystem.

Symbiosis is the interaction between two different organisms living in close physical association.

   Mutualism means that both organisms benefit.  A form of mutualism is  a sun flower and a bee. The bee fertilizes the flower and the bee gathers  pollen and nectar from the sun flower.  

  The definition of parasitism is that one organism benefits but the other is harmed.  A form of parasitism is like a tic sucking blood from a human or cow or any other animal.

A form of comensalism is like a bird eating the flies that a cow attracts.  Communalism means that one organism benefits and the other is not effected.

Limiting factors are the factors that limit the size of a species population.  For example if there were to many squirrels in one place and they didn't have enough food, water, or living space some of the squirrels would leave.

An  abiotic factor affects the ecosystem by giving animals water, and some animals might live under ground so they use the ground water or air and they are all biotic factors.    An abiotic factor is something that is not living.

A biotic factor is something that is living. A biotic factor is for example is a plant bird or any other kind of living thing.
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