The outcrossing is a rule for choosing spouse, where marital relationships between members of the same group or kinship system are prohibited. This rule determines that the spouse must be chosen from a clan that is different from his own, prohibiting marriages between relatives. In today’s society, the rule is specifically delimited to prohibit marriages
The megadiverse countries are those with high levels of biodiversity. The first time the term was used was in 1997 in an investigation by researcher Russell Mittermeier. Mittermeier estimated the number of species of different taxonomic groups to establish the list of countries with the greatest diversity in the world. Subsequently, in 2002, the first
A thermodynamic system or working substance is a part of the universe that is chosen to be studied by thermodynamics. This is a very broad definition, because a thermodynamic system can be vast like a galaxy or it can be a small amount of gas contained in a cylinder. Everything that surrounds the thermodynamic system,
The whales breathe through the lungs, reason usually rise to the surface of the ocean to air.It is important to note that, because whales live in the oceans, many people consider them to be fish. However, whales are actually mammals. Mammals are a group of animals that breathe using their lungs, that give birth to
The blue whale ( Balaenoptera musculus ) is a placental mammal belonging to the order of the cetaceans. It is the largest species in the entire animal kingdom, being around 33 meters long and weighing about 150 tons. Its skin is bluish gray, but under water it looks a more intense blue color. Despite its
The chemical reactions we can find in everyday life in general. This is the answer that a chemist could give you without error to exaggerate. For example, when a match burns, a combustion reaction occurs. And it is that someone eager in this matter will try to see things from the molecular or atomic point
The astronomical position of Europe is 35 degrees north latitude to 75 degrees north latitude and from 25 degrees west longitude to 35 degrees east longitude. The reason for the change in direction from west to east longitude is because the prime meridian is at zero degrees. Europe is located in the northern hemisphere and
Hemicellulose is a term used to designate a very diverse group of polysaccharides present in the cell walls of many plants and that represent more than a third of the biomass of said structures. The concept was proposed by Johann Heinrich Schulze to designate polysaccharides other than starch and in association with cellulose that were
The Euler number or number e is a well-known mathematical constant that appears frequently in numerous scientific and economic applications, along with the number Ļ and other important numbers in mathematics. A scientific calculator returns the following value for the number e: e = 2.718281828 … But many more decimals are known, for example: e
The imaginary numbersare those that give a solution to the equation in which the unknown, squared, is equal to a negative real number. The imaginary unit isi = ā (-1). In the equation: z 2 = – a, z is an imaginary number that is expressed as follows: z = ā (-a) = iā (a) Being toa
