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Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.

The rugged mountain ridges of the Great Western Divide in foreground with 13,388ft Kaweah Queen for distant horizon as seen from the crest of the Tableland in Sequoia National Park.

$plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background$

$Wet rough asphalt black bitumen road pavement surface abstract grunge texture close-up top view background banner.\nBitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum. In the U.S., it is commonly referred to as asphalt. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used.\nTarmacadam is a road surfacing material made by combining crushed stone, sand, and tar. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces. The terms \$