What are the view criteria. Let's try to give a definition, find out the features of the biochemical, ethological, physiological criterion
Science 2024, November
Not a single process in the world is possible without the intervention of chemical compounds, which, reacting with each other, create the basis for favorable conditions. All elements and substances in chemistry are classified according to the structure and functions they perform. The main ones are acids and bases. When they react with each other, soluble and insoluble s alts are formed
This article will discuss the history of the creation and development of proton accelerators, as well as how exactly it developed to the modern Large Hadron Collider. New technologies and the direction in which they continue to develop will be explained
Genetics reveals the main patterns of inheritance of traits. Mendel made a significant contribution to this area
Consider the main types of concentration solutions. Let's find out ways to express concentrations, examples of solving problems for calculating the mass fraction of a solute
Mathematics is not a boring science, as it seems sometimes. It has a lot of interesting, although sometimes incomprehensible for those who are not eager to understand it. Today we will talk about one of the most common and simple topics in mathematics, or rather, that area of u200bu200bit that is on the verge of algebra and geometry
Solubility is a chemical quantity that characterizes the content of a solute in a solution. The properties of this quantity and its application are discussed in the article
Hydrides are compounds of an element with hydrogen. Formulas, properties, obtaining hydrides. Hydrogen hydride, water
Carbide: formula, main types. Chemical and physical properties of carbides, their production and application
Zero point energy is a hoax. Exposing the charlatan John Searle. Refutation of the existence of perpetual motion machines
What is the amino acid histidine? Formula, chemical properties, reactions, interaction with other substances
Probably everyone who is familiar with school chemistry and was even a little interested in it knows about the existence of complex compounds. These are very interesting compounds with wide applications. If you have not heard of such a concept, then below we will explain everything to you
Methods of sulfur extraction, properties, application. History and development of extraction methods. Sulfur melting point
The oscillatory circuit is used everywhere in real life: in phones, microwave ovens and so on. We cannot imagine our life without it. This article will discuss the structure of the contour and its elements, the principle of its operation and application in real life
Italian Alessandro Volta is a physicist and chemist, a pioneer in the field of electricity, the discoverer of methane. This remarkable scientist was idolized by his students at the University of Pavia
Meteorologist is one of the most interesting professions. What are its features, and what qualities should its representative have - read in the article
The article shows the main stages of mercury demercurization. The definition of this concept is given. The symptoms of poisoning (chronic and acute) with vapors of this metal are described
The article defines the term "indefinite variability". Its meaning and types are described. Examples of both definite and indefinite variability are given
Features of the biology of an extensive and diverse type of mollusk. Why do molluscs have poorly developed regeneration? Types of regeneration in representatives of some classes of mollusks
The genetic code, expressed in codons, is a system for encoding information about the structure of proteins, inherent in all living organisms on the planet. Its decoding took a decade, but the fact that it exists, science understood for almost a century. Universality, specificity, unidirectionality, and especially the degeneracy of the genetic code are of great biological importance
"I am Alpha and Omega, the beginning and the end… Who is and was and is to come…" - said Jesus Christ, for some reason using the letters of the Greek alphabet. Symbolism surrounds people from all sides. By studying the signs, a person expands his consciousness and can look at the world around and at himself in a new way. The article discusses the symbols alpha and omega in many ways
The scientific theory of biogeocenosis was created by the Russian scientist V. Sukachev. It gives an exhaustive description of natural complexes, and also studies the diverse types of interactions between parts of the ecosystem: plants, animals, microorganisms. Particularly serious studies of the forms of biotic relationships were carried out by another Russian scientist, V. Beklemishev, who singled out four types of them. It should be noted that in ecology, topical connections are one of the most common types of
Do many people remember the school chemistry course? Perhaps only those who connected their lives with it or received a certificate quite recently. However, probably everyone has heard about hydrocarbons. But it's worth refreshing your knowledge a bit
Everyone knows from experience what an electric current is, but not everyone understands the physical nature of this phenomenon, especially if physics was not interested in this during the school course. And for many schoolchildren, physics textbooks seem slurred
All matter is made up of elements. But why is everything around us so different? The answer has to do with tiny particles. They are called protons. Unlike electrons, which have a negative charge, these elementary particles have a positive charge. What are these particles and how do they work?
X-ray spectral analysis: a brief description, the physical basis of the process. Research types. Preparation of samples for analysis. Method for conducting qualitative and quantitative determination of the chemical composition of samples. Errors and their causes
A recessive trait is a trait that does not manifest itself if there is a dominant allele of the same gene in the genotype. To better understand this definition, let's look at how traits are encoded at the genetic level
Animals, like all organisms, are at different levels of organization. One of them is cellular, and its typical representative is the amoeba proteus. Features of its structure and features of life will be considered further in more detail
Bacteria are the simplest microorganisms. Most often they have only one cell. In nature, there are both useful and harmful microorganisms for humans and the environment. One way or another, all of them are united by a primitive structure and small size. In our article, you can find out how bacteria eat, reproduce and breathe
A chemically hazardous substance can cause serious disasters if stored, processed or transported incorrectly. Compliance with safety measures will protect you from danger
Nonconformism is a rather interesting and unusual point of view. It can even be said that this is a worldview and a way of perceiving reality. And it should be noted that there are quite a lot of nonconformists in modern society today
The complex structure of the human body is currently the pinnacle of evolutionary transformation. Such a system needs special ways of coordinating. Humoral regulation is carried out with the help of hormones. But the nervous one is the coordination of activity with the help of the organ system of the same name
Homeostasis is life. Proper work of homeostasis processes allows a person to feel he althy, full of strength and energy in any situation. Balance in the body is the key to its proper functioning
Do you know what class the brittle spindle belongs to? This animal is a reptile. It is very easy to confuse it with a snake. However, the brittle spindle (class Reptiles) is a small lizard that looks like a snake. The length of her body reaches 45 cm. Of these, 2/3 is her flexible tail
What are the discoveries of the Italian criminologist and psychiatrist Cesare Lombroso? What are his theories about delinquents and geniuses? What device was invented by this researcher? Answers to questions - in the article
Anatomy - what is it? What does this science study? The history of the development of the discipline, the study of this science in the school course. Classification of anatomical and biological sciences, their relationship
What is kinematics? For the first time, secondary school students begin to get acquainted with its definition in physics lessons. Mechanics (kinematics is one of its branches) itself constitutes a large part of this science
Let's consider the relationship between unsaturated hydrocarbons of the acetylene series and saturated alkanes using the dehydrogenation reaction as an example
Alpha and beta decays of nuclei are widely known phenomena. In addition to them, there are a number of other reactions that are less common. Each of these processes is worth considering in order to have an idea about atomic physics
Iron is present in water in the form of divalent and trivalent ions. How to clean drinking and technical liquids from these contaminants? An urgent problem for an ordinary family and a large enterprise. Consider the reasons on which the solubility of iron in water depends, the forms of pollutants, methods for removing ferrocompounds