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YouTube Live was a 2008 event streamed live on the Internet from San Francisco and Tokyo. It was launched November 22–23, 2008. It was hosted by a variety of YouTube celebrities, including The Black Eyed Peas rapper will.i.am, Tom Dickson of Will It Blend, Michael Buckley, The Happy Tree Friends, Fred, Smosh, Esmée Denters, Bo Burnham and singer Katy Perry among others. [1]
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A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
Quercus agrifolia, the California live oak, [3] or coast live oak, is an evergreen [4] live oak native to the California Floristic Province.Live oaks are so-called because they keep living leaves on the tree all year, adding young leaves and shedding dead leaves simultaneously rather than dropping dead leaves en masse in the autumn like a true deciduous tree. [5]
The stomata complex regulates the exchange of gases and water vapor between the outside air and the interior of the leaf. Typically, the stomata are more numerous over the abaxial (lower) epidermis of the leaf than the (adaxial) upper epidermis. An exception is floating leaves where most or all stomata are on the upper surface.
A specimen from the "hybrid zone" of the leaf green tree frog and southern leaf green tree frog showing physical characteristics of both species. This is a fairly small species of tree frog, up to about 40 mm (1.6 inches) in length. It can be light green to dark olive green to light brown to dark brown on the dorsal surface.