Ecosystems

= Standard 9 = = Describe the relationship of populations within a habitat to various communities and ecosystems. = = • Describing the relationship between food chains and food webs = = • Describing symbiotic relationships =

abiotic - the non-living parts of an ecosystem (soil, water, temperature, sunlight)

 * ==This means non-living or never has lived! ==

biotic - the living parts of an ecosystem

 * ==This means living or has lived! ==

symbiosis - a long term relationship between different species

 * 1) == commensalism - a relationship between two organisms of different species, in which one benefits and the other is not effected. ==
 * 2) == mutualism - a relationship between two organisms of different species, in which both benefit. ==
 * 3) == parasitism - a relationship between two organisms of different species, in which one benefits and the other is harmed. ==

[|Analyzing an Ecosystem]


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