Secondary education and schools 2025, January

What is the depth of the Volga in its various sections? To answer this question, you need to consider all parts of the river separately - the Upper, Middle and Lower Volga. The study will also need to include the depth of the numerous reservoirs located on it. Last modified: 2025-01-10 15:01

Biogeocenosis is a natural formation with clear boundaries. It consists of a set of biocenoses (living beings) that occupy a certain place. For example, for aquatic organisms, this place is water, for those who live on land, it is the atmosphere and soil. Below we will look at examples of biogeocenosis that will help you understand what it is. We will describe these systems in detail. You will learn about their structure, what types of them exist and how they change. Last modified: 2025-01-10 15:01

Sailing ships have always attracted romantics. What could be more beautiful than sailing on the waves on a ship driven by a fair wind? The names of the ships are already poetry. Frigate, battleship, schooner - they all evoke thoughts of long voyages across uncharted seas. But the most famous ship is the brigantine. Last modified: 2025-01-10 15:01

Holland is an amazing country. It is known as the huge "flower garden" of Europe. There are also unique architectural structures. What are the most popular cities in Holland? An alphabetical list is provided in this article. Last modified: 2025-01-10 15:01

Radiation is a physical process, the result of which is the transfer of energy using electromagnetic waves. The reverse process to radiation is called absorption. Let us consider this issue in more detail, and also give examples of radiation in everyday life and nature. Last modified: 2025-01-10 15:01

Dynasty has long enjoyed honor, respect and universal recognition. Representatives of dynasties at all times constituted the highest society, set the tone for various events and were in many ways an example to follow. For more than one century, representatives of various dynasties have carefully preserved and passed on from generation to generation the huge legacies of their ancestors. Last modified: 2025-01-10 15:01

Greece is a paradise in Europe. The country has become widely known for its rich history, it is no less interesting as an international resort. Consider the largest islands of Greece. Last modified: 2025-01-10 15:01

In the conditions of life of modern society, psychological and pedagogical diagnostics of the development of children is of great importance. Last modified: 2025-01-10 15:01

In the central part of Africa is the Democratic Republic of the Congo (formerly Zaire), a former French colony. Its capital is Kinshasa. The province is located along the southern coast of the Congo River. This is the only full-flowing river that crosses the equator twice. It is the second longest in Africa after the Nile. The Ebola channel flows into the main Congo. Last modified: 2025-01-10 15:01

Knowing what protects you is very important. It is even more important to help your body. Scientists have long tried to understand the processes responsible for resistance to infections. And when they succeeded, we defeated many dangerous diseases and significantly improved the quality of life. Read more about immunity and its meaning in the article. Last modified: 2025-01-10 15:01

What functions do proteins perform, what is their structure and why do they play a huge role in the life of every organism - our article will answer all these questions. Last modified: 2025-01-10 15:01

All representatives of multicellular animals differ in the level of organization, characteristic features of life processes and are combined into special taxa - types. There are 7 in total. A type of flatworm is one of them. These creatures have perfectly adapted to the conditions of existence and occupy their biological niche. How do flatworms feed? Find answers in our article. Last modified: 2025-01-10 15:01

Each class of chemical compounds is capable of exhibiting properties due to their electronic structure. Alkanes are characterized by substitution, elimination or oxidation reactions of molecules. All chemical processes have their own characteristics of the course, which will be discussed further. Last modified: 2025-01-10 15:01

By the way, some tribes still survived to this day. Scientists even specifically looking for them. Seeing the tribe with your own eyes is quite interesting. These people have never seen TV, and certainly have no idea what the Internet is. Last modified: 2025-01-10 15:01

Zoogeography is a science that studies the patterns of distribution of various animals on Earth. Why do certain animals occupy this particular location? Why is this range the best for certain species? Zoogeography can answer these and many other questions. Last modified: 2025-01-10 15:01

Thunderstorm is not only beautiful lightning in the sky, but also danger. The sky covered with dark blue clouds, strong wind, thunder, flashes - all that we are used to seeing in this phenomenon. Many have probably wondered more than once: “Where does lightning strike during a thunderstorm?”. Last modified: 2025-01-10 15:01

This question is often of interest not only to children, but also to adults. Indeed, it is insanely interesting to see this fluffy animal next to you, and not high up on a tree. Last modified: 2025-01-10 15:01

The information in this article is intended to give a better understanding of the two bones in our body, namely the ischium and the femur. We will consider their structural features, for example, the presence of a branch at the ischium or a trochanter at the femur, as well as their shape and ossification process. Last modified: 2025-01-10 15:01

I wonder what the characteristic of copper looks like? It is known that this is an element of the 11th group of the 4th period of the system of chemical elements of D. I. Mendeleev. Its atom has number 29 and is denoted by the symbol Cu. In fact, it is a transitional ductile metal of a pinkish-golden color. Last modified: 2025-01-10 15:01

What does a mathematician mean when he says that a number sequence converges? This can be explained by examining specific examples. They will help clarify some of the confusing concepts associated with the construction of numerical patterns. Last modified: 2025-01-10 15:01

Cutting - what is it? This word has many interpretations and denotes both an action and an object at the same time. Not everyone knows, but etymologically it has a connection with such a garment as a shirt. More details about the fact that this is a felling will be discussed in the article. Last modified: 2025-01-10 15:01

On our planet there are many different states that differ in language, culture and other characteristics. But there are very few of those that are located on the islands, and are either separate countries or broad autonomies. Last modified: 2025-01-10 15:01

Most of the children who have reached the age of 3 are preparing to go to kindergarten. This is a very exciting moment for both the kids themselves and their parents. When filling out the documents, some of them pay attention to the full name of the institution - a kindergarten of a combined type. Not everyone knows what this wording is, and this only increases anxiety. Let's try to figure out what are the features of such a kindergarten. Last modified: 2025-01-10 15:01

The most famous information about the Sun is that it is a star. However, there are many more interesting facts that may be of interest to both children and adults. Last modified: 2025-01-10 15:01

The list of references is an integral part of any intellectual work, whether it is a school report or a professor's dissertation. Certain rules apply to its design, which must be observed in order to avoid difficulties with the supervisor. This list is traditionally placed after the main work. It includes all sources that were mentioned in the text, as well as those from which information was taken for analysis. Last modified: 2025-01-10 15:01

Reptiles are mysterious creatures that frighten and amaze. What animals of this class should you learn about first of all?. Last modified: 2025-01-10 15:01

The structure and functions of the cell have undergone a number of changes in the course of evolution. The appearance of new organelles was preceded by transformations in the atmosphere and lithosphere of the young planet. One of the significant acquisitions was the cell nucleus. Eukaryotic organisms received, due to the presence of separate organelles, significant advantages over prokaryotes and quickly began to dominate. Last modified: 2025-01-10 15:01

Sophism in Greek means literally: trick, invention or skill. This term refers to a statement that is false, but not devoid of an element of logic, due to which, on a superficial glance at it, it seems true. Last modified: 2025-01-10 15:01

The legumes are one of the largest families of dicots. They are distributed throughout the land of the globe accessible to flowering plants and are represented by a wide variety of forms, from huge trees to vines and tiny plants living in the desert. Last modified: 2025-01-10 15:01

Every person sometimes hears about such terms as ounce, pound and others. Once such measures of weight were used in many European countries, but today the English measure of weights has been preserved in only a few places on the planet. Last modified: 2025-01-10 15:01

Each of us at least once in our lives faced rudeness. No one is immune from this, you can be rude in line for bread, in crowded public transport or from a car that “cut” you. Very often you encounter this phenomenon when you come to solve any issue in a state institution. One gets the impression that every second official is a boor, and that this is one of the main requirements when applying for a job in the state apparatus. Last modified: 2025-01-10 15:01

Since 2005, it is believed that there are eight planets in the solar system. This is due to the discovery of M. Browne, who proved that Pluto is a dwarf planet. Of course, the opinions of scientists are divided: some believe that this planet should not be classified as a dwarf planet, but it should be returned to its former title, while others agree with Michael. There are even opinions that have proposed increasing the number of planets to twelve. Last modified: 2025-01-10 15:01

All rivers of the Arctic Ocean basin flow through Eurasia and North America. For example, the largest American river Mackenzie. In this article, some rivers of the Arctic Ocean in Russia will be considered, since among them are the largest water arteries of the planet. Last modified: 2025-01-10 15:01

Paladin - who is this? This word is historicism, since people belonging to this category no longer exist today. Is that the name of the characters of various computer games. More details about who this paladin is will be discussed below. Last modified: 2025-01-10 15:01

What are the geographical coordinates of Khabarovsk? Where is this city located? Why is it interesting and unique? Our article will tell about all this. Last modified: 2025-01-10 15:01

The geographical center of Russia is located in the remote taiga on the shore of the lake. Vivi. It is marked by an obelisk with a corresponding inscription. Last modified: 2025-01-10 15:01

Non-metals are elements that differ significantly in physical and chemical properties from metals. The reason for their differences could be explained in detail only at the end of the 19th century, after the discovery of the electronic structure of the atom. What is the peculiarity of non-metals? What qualities are characteristic of their day? Let's figure it out. Last modified: 2025-01-10 15:01

There are many reasons why a person needs sports. However, it often happens that a person is simply unaware of them. Why physical activity is needed - read the article. Last modified: 2025-01-10 15:01

Have you ever thought that revolutionaries and politicians do not live by the laws that they write on their slogans? They often turn a blind eye to the "chimeras" between good and evil, and like to repeat that the winners are not judged. So, in today's publication we will consider the meaning of the word "winner". Last modified: 2025-01-10 15:01

The Confederate States of America (CSA) is an independent (de facto) state. From 1862 to 1863 the sovereignty of the alliance was recognized by France and the British Empire. However, after the Battle of Gettysburg, the state was only formally considered independent. There was a confederation from 1861 to 1865. Last modified: 2025-01-10 15:01