Tree wiki:
>This article is about the biological organisms known as trees. For other meanings of the word see tree (disambiguation). A tree can be defined as a large, perennial, woody plant. Though there is no set definition regarding minimum size, the term generally applies to plants at least 6 m (20 ft) high at maturity and, more importantly, having secondary branches supported on a single main stem or trunk (see shrub for comparison). Compared with most other plant forms, trees are long-lived. A few species of trees grow to 100 m tall, and some can live for several thousand years.
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Art wiki:
[hree-letter%20acronym">three-letter acronym that can mean:Adaptive resonance theoryAdvanced Rapid Transit metro technologyassisted reproductive technologyAnaheim Resort TransitIATA airport code for Watertown International AirportISO 639 alpha-3 code for otherwise unassigned artificial languagesThe National Rail code for Arrochar and Tarbet railway station, United Kingdom. External links: ; ; . Antiretroviral therapy. It is used in the treatment of HIV infection.
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