I don't get a lot of this eaither -biology has never been my interest and has always been hard for me because its hard for me to memorize things unless I understand them.
And I don't suggest taking Wikipedia as fact - we know it can be manipulated.
But when the articles are clearly written and well source I find them useful.
I have used the Living organisms article and its helped me. It includes this list of the hierarchy and each of the word links to an article for more detail. For examplew following the link for kingdons I found a chart that showed life was originally classified in two kindoms but as more discoveries were made that grew to 6 kingdoms.
Good luck.
http://en.wikipedia.org/wiki/Living_organisms
>>Organizational terminology
All organisms are classified by the science of alpha taxonomy into either taxa or clades.
Taxa are ranked groups of organisms which run from the general (domain) to the specific (species). A broad scheme of ranks in hierarchical order is:
* Domain
* Kingdom
* Phylum
* Class
* Order
* Family
* Genus
* Species
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Hey, another nice recommendation, thanks!