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4 days ago · antibiotic, chemical substance produced by a living organism, generally a microorganism, that is detrimental to other microorganisms. Antibiotics commonly are produced by soil microorganisms and probably represent a means by which organisms in a complex environment, such as soil, control the growth of competing microorganisms.
4 days ago · The tortoise, any member of the family Testudinidae, is a reptilian vertebrate that lives exclusively on land. Also known as land turtles, tortoises are found on all continents except for Antarctica and Australia. With nearly 50 species spread across more than 15 genera, tortoises vary widely in terms of size, color, and other features.
3 days ago · island, any area of land smaller than a continent and entirely surrounded by water. Islands may occur in oceans, seas, lakes, or rivers. A group of islands is called an archipelago. Islands may be classified as either continental or oceanic. Oceanic islands are those that rise to the surface from the floors of the ocean basins. Continental ...
4 days ago · The spray the vinegaroon uses to defend itself is made up of acetic and caprylic acid. The acetic acid gives the spray a vinegary smell and gives the animal its name. Some people do keep giant vinegaroons as pets, for they are nonvenomous and peaceful. Vinegaroons have eight eyes, but their eyesight is bad. The whip scorpion is not an insect.
3 days ago · Ayn Rand. Alice O'Connor (born Alisa Zinovyevna Rosenbaum; [c] February 2 [ O.S. January 20], 1905 – March 6, 1982), better known by her pen name Ayn Rand ( / aɪn / EYEN ), was a Russian-born American author and philosopher. [3] She is known for her fiction and for developing a philosophical system she named Objectivism.
4 days ago · House, horse and blow flies are obvious examples, but what many people may not know is that even mosquitoes, midges, and gnats are members of the same order as well. Here is a list of the major groups: House and dung flies – Muscoidea. Blow and flesh flies – Oestroidea. Marsh flies – Acalyptratae. Louse flies – Hippoboscoidea.
3 days ago · genetically modified organism (GMO), organism whose genome has been engineered in the laboratory in order to favour the expression of desired physiological traits or the generation of desired biological products. In conventional livestock production, crop farming, and even pet breeding, it has long been the practice to breed select individuals ...
