The article is devoted to the method of experimental research. The features of the method, types, advantages and disadvantages are considered. Last modified: 2023-12-17 05:12
Science 2024, December
Education of a person's personality is hard and responsible work. Nevertheless, pedagogy in our time is increasingly depreciating. However, professionals motivated to achieve success still meet, work in their place and really sow "reasonable, kind, eternal". Last modified: 2023-12-17 05:12
In the 19th century, a theory was born that claimed that the hereditary characteristics of children are affected by the first sexual partner of a woman. The article will talk about such a phenomenon as telegony, as well as about the studies conducted to confirm it. Last modified: 2023-12-17 05:12
The main purpose of the thought experiment called "Twin Paradox" was to refute the logic and validity of the special theory of relativity (SRT). It is worth mentioning right away that there is actually no question of any paradox, and the word itself appears in this topic because the essence of the thought experiment was initially misunderstood. Last modified: 2023-12-17 05:12
The article describes some common potassium compounds such as potassium hydroxide, carbonate, nitrate, sulfate, chlorate and potassium cyanide. Last modified: 2023-12-17 05:12
Deimos and Phobos are small by cosmic standards satellites of our neighbor, Mars. Despite their rather formidable names, they look modest against the background of other celestial bodies in the solar system. Last modified: 2023-12-17 05:12
A flat figure built from points with axes is called a hyperbola. This formation is found in nature, for example, sunlight can be involved in creating this beautiful curve. Last modified: 2023-12-17 05:12
Natural selection is the guiding factor of evolution. It operates according to one mechanism - the strongest survive and leave behind offspring, i.e. the fittest individuals. However, depending on its effectiveness, direction, characteristics of the conditions for the existence of organisms, the forms of natural selection may be different. One of its forms is driving selection (directed), which contributes to the formation of new species of organisms in a changed environment. Last modified: 2023-12-17 05:12
Rust fungus is a pest that affects various crops. A diverse mushroom has become quite widespread, primarily settling on cereals - wild, cultivated. Last modified: 2023-12-17 05:12
"A bad habit is like a very comfortable bed. It’s easy to get into it, but it’s hard to get out from under the covers.”. Last modified: 2023-12-17 05:12
From time to time various space bodies fall on our Earth. They are large and small, inconspicuous and intimidating, iron and silicate, the most diverse. The scientific name for a shooting star is a meteorite. This definition applies to bodies larger than 10 µm. Smaller space guests are called micrometeorites. Last modified: 2023-12-17 05:12
Characterization of soils in order to determine their value is impossible without studying soil profiles. What is it, and what types of profiles are, read the article. Last modified: 2023-12-17 05:12
The article reveals the concept of "biological system", describes its main properties and features. The structural elements of biological systems and the principle of classification of living organisms are also indicated. Last modified: 2023-12-17 05:12
Habitat is an area with clear boundaries in which certain types of organisms are common. They exist here due to the close relationship between environmental factors and other representatives of flora and fauna. Last modified: 2023-12-17 05:12
Water is a mysterious liquid. This is due to the fact that most of its properties are anomalous, different from other liquids. The reason lies in its special structure, which is due to hydrogen bonds between molecules that change with temperature and pressure. Ice also has these unique properties. Last modified: 2023-12-17 05:12
The digestive system of fish begins in the mouth with teeth that are used to capture prey or gather plant foods. The shape of the mouth and the structure of the teeth can vary greatly, depending on the type of food that fish usually eat. Last modified: 2023-12-17 05:12
A parasitic worm and its effect on the body. Types of helminths, classification, structural features and lifestyle. Diseases associated with parasitic worms. Last modified: 2023-12-17 05:12
All our words and statements are subject to a single goal - meaning. In different situations, we speak differently, we use different terms and concepts. In order not to get confused in your own words and correctly convey the idea to the interlocutor, there is such a thing as a "categorical apparatus". Last modified: 2023-12-17 05:12
If you don't act like everyone else, society will hate you. This opinion is quite popular and not without reason. Unusual behavior confuses people, their mood deteriorates, they get upset, and the whole day goes nowhere. Believe me, no one wants to spit on you once again, people already have a lot to do. To prevent such misfortunes from happening, there are special disciplines that teach correct behavior in society. One of these is deviantology. Last modified: 2023-12-17 05:12
Science in ancient times was only in its infancy. And often it was done by loners, who, moreover, for the most part were philosophers. But with the advent of the scientific method, things have advanced significantly. And the empirical fact plays a significant role in this. Last modified: 2023-12-17 05:12
Graphology is a science, in the field of view of which there is a connection between a person's handwriting and his character traits. For all its specificity, the use of the basics of graphology is becoming more and more common. Interest in graphology also affected us. Let's figure out what kind of science it is, which can tell the secrets of a person just by his handwriting or a short painting. Last modified: 2023-12-17 05:12
The functions of society also include the regulation of relations between individuals, various groups and communities on the basis of acts and provisions of civil law. This allows you to avoid or stop the possibility of conflict situations or resolve them in a civilized legal way. Last modified: 2023-12-17 05:12
What a great variety of forms of political behavior exists! And how few people know about them. And this is not surprising - after all, this topic is studied exclusively by sociologists and political scientists. But knowledge in this case will not interfere with those who wish to directly participate in the life of the country. So, beginner political scientist, let's study the main forms of political behavior. Last modified: 2023-12-17 05:12
The ability to reproduce itself is one of the hallmarks of living organisms. In nature, there are several ways of reproduction that ensure the continuity of generations on the planet. Last modified: 2023-12-17 05:12
Electrolyte solutions are special liquids that are partially or completely in the form of charged particles (ions). The process of splitting molecules into negatively (anions) and positively charged (cations) particles is called electrolytic dissociation. Last modified: 2023-12-17 05:12
Many of us have heard about dominant and recessive genes - some chains of nucleotides hidden in our genome that are responsible for hereditary traits. How do they interact with each other? What is dominance and how does it happen? Why are recessive alleles not always suppressed by dominant ones? These questions have occupied scientists since the discovery of genes. Last modified: 2023-12-17 05:12
As you know, pH is a unit of hydrogen ion activity, equal to the reciprocal logarithm of the activity of hydrogen ions. Thus, water with a pH of 7 has 10-7 moles per liter of hydrogen ions; and water with a pH of 6 - 10-6 mol per liter. The pH scale can range from 0 to 14. Does pH affect human he alth?. Last modified: 2023-12-17 05:12
Today, Igor Ivanovich Sikorsky personifies the successful development of the three most important types of modern aircraft. Large four-engine aircraft, giant flying boats and multi-purpose helicopters, which played an important role in the development of aviation, appeared thanks to the genius of the legendary aircraft designer. Last modified: 2023-12-17 05:12
The inquisitive mind never stops and is constantly in search of new information. Modern inventions are a prime example of this. What inventions are familiar to you? Do you know how they influenced the course of history and all of humanity? Today we will try to open the curtain of the mystery of the world of new and relatively recently invented technologies. Last modified: 2023-12-17 05:12
A famous philosopher once said: "Life is a form of existence of protein bodies." And he was absolutely right, because it is this organic substance that is the basis of most organisms. Quaternary structure protein has the most complex structure and unique properties. Our article will be devoted to him. Last modified: 2023-12-17 05:12
Fibrillar proteins - those that have a structure in the form of a thread. They do not dissolve in water and have a very large molecular weight, the structure of which is highly regulatory, it comes to a stable state due to interactions between different chains of polypeptides. These chains are synchronously to each other on the same plane and create the so-called fibrils. Last modified: 2023-12-17 05:12
One of the definitions of life is as follows: "Life is a way of existence of protein bodies." On our planet, without exception, all organisms contain such organic substances as proteins. In this article, simple and complex proteins will be studied, differences in the molecular structure will be determined, and their functions in the cell will be considered. Last modified: 2023-12-17 05:12
Deoxyribonucleic acid serves as a carrier of hereditary information transmitted by living organisms to the next generations, and a matrix for the construction of proteins and various regulatory factors required by the body. In this article, we will focus on what are the most common forms of DNA structure. We will also pay attention to how these forms are built and in what form DNA resides inside a living cell. Last modified: 2023-12-17 05:12
All organisms are made up of cells - the smallest structural and functional units of the structure. But there are also non-cellular forms of life: viruses and bacteriophages. What features of the structure allowed them to occupy their worthy niche among the kingdoms of wildlife? Let's find out more. Last modified: 2023-12-17 05:12
The modern taxonomy of animals is huge and diverse, and therefore we need to somehow describe them all, document them, distribute them into groups, and bring them together. And in this case, such a thing as taxa helps us. Last modified: 2023-12-17 05:12
One of the first groups of multicellular animals - type Coelenterates. Grade 7, which includes a zoology course, examines in detail all the structural features of these amazing creatures. Let's recap what they are. Last modified: 2023-12-17 05:12
From the beginning of time, people have been interested in the composition, structure and interaction of everything that surrounds them. This knowledge is combined into a single science - chemistry. In the article, we will consider what it is, sections of chemistry and the need to study it. Last modified: 2023-12-17 05:12
Through DNA, hereditary information is preserved and transmitted from generation to generation with the possibility of variability within certain limits. The synthesis of all proteins necessary for a living system would be impossible without a DNA matrix. We will consider the structure, formation, fundamentals of functioning and the role of DNA in protein biosynthesis. Last modified: 2023-12-17 05:12
Today we will try to find the answer to the question “Heat transfer is it?..”. In the article, we will consider what this process is, what types of it exist in nature, and also find out what is the relationship between heat transfer and thermodynamics. Last modified: 2023-12-17 05:12
Such a simple and visual way of solving problems in genetics, like the Punnett lattice, was proposed by English scientists about a hundred years ago. And the method is still used by geneticists all over the world. Last modified: 2023-12-17 05:12