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The purple finch population has been displaced from some breeding season habitats in the Eastern United States following the introduction of the house finch, which is native to the western U.S. and Mexico. The two species share a similar niche, with the house finch often outcompeting the purple finch during the summer. Behavior
Binomial name. Linaria purpurea. ( L.) Mill. Synonyms [1] Antirrhinum purpureum L. Termontis purpurea (L.) Raf. Linaria purpurea or purple toadflax is a purple-flowered plant native to Italy, part of the plantain family ( Plantaginaceae ). It is sometimes planted in gardens and is also an introduced weed in North America and other parts of Europe.
Ozone ( / ˈoʊzoʊn /) (or trioxygen) is an inorganic molecule with the chemical formula O. 3. It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O. 2, breaking down in the lower atmosphere to O.
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF 2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as fluorite.
English hard rock band Deep Purple have released 22 studio albums, 43 live albums and 55 singles . Formed in early 1968 by Jon Lord, Ian Paice, Rod Evans, Ritchie Blackmore, and Nick Simper, Deep Purple released their debut album, Shades of Deep Purple, in July of that year. The band has taken on many new members over the years, and Ian Paice ...
Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H2, sometimes called dihydrogen, [11] but more commonly called hydrogen gas, molecular hydrogen or simply hydrogen. It is colorless, odorless, tasteless, [12] non-toxic, and ...
Definition. Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to ...
Nitrogen triiodide is an inorganic compound with the formula N I 3. It is an extremely sensitive contact explosive: small quantities explode with a loud, sharp snap when touched even lightly, releasing a purple cloud of iodine vapor; it can even be detonated by alpha radiation. NI 3 has a complex structural chemistry that is difficult to study ...