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

Marble quarries in Custonaci Trapany Sicily Italy Aerial view Today, more than 200 quarries, 54 of which in activity, are recorded in a small area 3 km2 between Monte Cofano and Monte Sparagiaio.

Clay Hills View in Nallihan. They Are Hills Created By The Wear Of Clay Layers With Different Resistance. Nallihan is a district of Ankara Province.

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

Aerial view of the Colca canyon in Arequipa. Peru

Early stage, two days, fertilized human eggs before transfer to the woman in an IVF procedure.

$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 \$