Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.This magma can be derived from partial melts of pre-existing rocks in either a planet's mantle or crust.xtrusive igneous rocks, also known as volcanic rocks, are formed at the crust's surface as a result of the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface.
A dragonfruit is a cactus of the genus Hylocereus. The commonly known species of dragonfruit, which is red (there are several colors), is Hylocereus undatus.ragon fruit can be called Hylocereus cacti, pitaya, pitahaya, fire dragon fruit, dragon pearl fruit, green dragon, or strawberry pear.
Bearded Dragon Scientific Classification & Taxonomy. Bearded Dragons are the common name for given to a small group of lizards known also as Pogona which are found only throughout Australia.Pogona are a genus of Agaminae, which is one of six sub families of Agamidae.Agaminae refers to the family of Agamids that are found throughout Africa, Asia and Australia.he Bearded Dragon is classified scientifically with the following taxonomy: 1  Class: Reptilia. 2  Order: Squamata. 3  Sub order: Lacertilia. 4  Infraorder: Iguania. 5  Family: Agamidae. 6  Sub Family: Agaminae. 7  Genus: Pogona. 8  Species: