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Modal verbs in English: what are they and what do they "eat" with?

For many, modal verbs in English are a difficult topic. Perhaps this is due to the number of verbs and their features

Examples of freeloading in nature

Living beings in nature react to each other and enter into relationships in many ways. One such type of communication between two organisms is commensalism, or parasiticism. Examples of such relationships in nature are quite common. Consider the most striking of them
What are sulfur-containing amino acids

Aminocarboxylic acids (amino acids) are beads in the protein chain of any living organism. But few people know that almost all of them were discovered in the second half of the last century. The biogenic sulfur-containing amino acids of interest to us in this article are cysteine and methionine. Let's try to enrich the reader's knowledge of these two organic compounds from the point of view of biochemistry and biology of our he alth
Groups and types of intercellular contacts

Scientists believe that the primary separation of the layer of elements interconnected by intercellular contacts ensured the formation and subsequent development of organs and tissues. Thanks to the use of electron microscopy methods, it was possible to accumulate a large amount of information about the ultrastructure of these bonds. However, their biochemical composition, as well as their molecular structure, have not been studied accurately enough today
Frequent histology of the respiratory system

Histology of the respiratory system is one of the important sections of biology that allows you to understand the structural features of a living organism

Interesting articles

What is participle in Russian

This article not only talks about what the participle is, but also explains how this form changes, how to write participles correctly and use them in speech

List of countries of disappeared peoples and tribes

The number of disappeared ancient civilizations and peoples who once inhabited our planet exceeds all your expectations. There are several thousand such peoples in Europe alone. They were subjugated by their neighbors, assimilated, genocide, etc. One way or another, we will never see them again in the form in which they originally existed. This article will look at some of these peoples
How to write "because", or another pain of a Russian person

"The great and mighty Russian language" - Ivan Sergeevich Turgenev said in modern times. And he is completely and absolutely right. Perhaps, no other language in the world causes so many problems when studying foreigners. How difficult it is for them to get used to the fact that our words are divided by gender, inclined by cases. Yes, even Russian people themselves very often make a variety of mistakes
What the Peace of Utrecht hides

What kind of events have happened in the world for many centuries. These were both international joys and global tragedies. And each of the events has its key significance, because no one knows how the world would have turned if something specific had not happened at all. World history knows a lot of wars, strife and subsequent peace negotiations and alliances
Lobnoe mesto on Red Square: photo, history

Moscow is the capital of our Motherland. Many people have been to this city. Someone loves him, someone hates him. But one cannot but admit that Moscow is architecturally beautiful and historically rich, especially its center. There are riches on Red Square - Execution Ground, a famous monument to Minin and Pozharsky, the tomb of Vladimir Ilyich Lenin, he is also a mausoleum

Editor's choice

Soviet philosopher Gvishiani Jermen Mikhailovich - biography, activities and interesting facts
Dzhermen Mikhailovich Gvishiani is a well-known philosopher and sociologist. Recognized specialist in the field of management. Academician of the Academy of Sciences of the USSR and the Russian Academy of Sciences, Doctor of Philosophical Sciences. He is also known for his family ties with the top leadership of the USSR, including Alexei Kosygin, Chairman of the Council of Ministers of the Soviet Union
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› How to spend the autumn holidays of a modern schoolgirl? Tips for high school girls

Why does s alt water boil faster than regular water, is that true?
To cook food faster, most housewives add s alt to the pot before the water starts to boil. In their opinion, this will speed up the cooking process. Others, on the contrary, argue that tap water boils much faster. To answer this question, you need to turn to the laws of physics and chemistry. Why does s alt water boil faster than regular water, and is it really so? Let's find out! Details in the article below
Why gases compress easily: elementary physics
The gaseous state of substances is an extremely interesting phenomenon, along with which substances acquire many useful properties. For example, gases are easily compressed. They adapt to the volume and shape of the tank they are filling. Why is this happening? Why do gases compress easily? How can this be explained scientifically? Find out in the article

Popular for the day

The brain of a fish: structure and features

There are many classes of different animals in nature. One of them is fish. Many people do not even suspect that these representatives of the animal world have a brain. Read about its structure and features in the article

Economic geography: what are agro-climatic resources?
The shape of our planet provides an uneven supply of light and heat in different regions. Mountainous or flat terrain, in turn, forms its own conditions on a certain territory. There are many factors affecting agro-climatic conditions. In this article we will talk about the agro-climatic resources of various regions
How to draw a cat and a dog together
Cat and dog are eternal enemies and friends at the same time. But if you wish, you can get along together. Let's try to draw together a good-natured "Italian" friendship of pets
Quantum entanglement: theory, principle, effect
It is difficult to find a person who would not dream of mysterious, mysterious magic. If you are going to not just dream, but partially touch and realize that the world of magic really exists, then this article is dedicated to you. Let's take the first step together into the world of quantum physics - the world of miracles and magic
Paradox is The paradoxes of physics. Theory of paradoxes
The course of development of civilization is based on a logical understanding of the world around us. An event that occurs, but does not find a clear logical explanation, is called a paradox. This article describes some of the well-known paradoxes faced by modern humanity

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