May 29, 2023

Bacteria are the simplest and smallest organisms found on earth. They are found in almost every place like air, water, soil and even inside our body. Their body is made up of single cell and size is from 0.2 to 100 microns (1 micron = 1/1000 millimeter).

May 24, 2023

Living organisms are very much found in population. They have different colours and form. It has been categorized into many categories on the basis of similarities. Basically living organisms are categorized into two categories - plants and organisms.

May 22, 2023

Basically, there are 9 characteristics of living things.

May 20, 2023

There are some changes that we cannot see easily with our eyes easily. Many species of organisms are born on earth. These changes take a long time than a human life to be seen. Therefore, humans cannot see the sequence of development of these changes. But scientists have collected many proofs and facts to prove these changes.

May 13, 2023

Fertilizers and pesticides are used largely to fulfill the food needs of the growing population of the world.

May 12, 2023

Many soaps and detergents are available in the market for bathing, washing and cleaning. They are made attractive by adding colors and smell.

May 11, 2023

Construction of home, bridges, roads and dams use natural stone wood, metals and bricks, lime, cement, concrete, etc. Natural stones like granite, marble and sand stone are also used. These materials have been used in the construction of nagarjun sagar dam.

May 10, 2023

Many metal elements can be separated from each other on the basis of physical qualities. These physical characteristics are used to identify metals.

May 09, 2023

We have been using metals since ages. The use of metals has been very important for human life that many civilizations have been named after metals like Iron Age and Copper Age.

May 08, 2023

Everything, organisms and plants are dependent on each other. They are connected together. Nature has made us in a way that humans, plants, animals and organisms are connected to each other. This makes a balance in nature. If one of them slips out or get separated then the chain gets destroyed.

May 07, 2023

The day and night occur by rotation of the earth and the sun; likewise, the seasons occur by revolution. This revolution of the earth is completed in 365 days - 7 days in a week, 30 days in a month and 365 days in a year.

May 06, 2023

The earth is round like a globe. It also revolves around the sun rotating on its tilted axis. This is the reason why the sun rises and appears to be sinking. That is why night and day are made.

May 04, 2023

The sun, moon and stars have a very important role in people's life. In the absence of these, life of humans is not possible. People of the older generation thought about them in different ways.

May 03, 2023

The sky is very large. It is wrapped around our earth. When we see it with our eyes we see blue color. In Vedic culture it is called 'open space' or a place that is void.

May 02, 2023

Chemical energy is related to the type of chemical conversion in which each atom of a reagent retains its identity and there is no change in its behavior and nature. But there are also some energy conversion processes in which the nuclei of some atoms remain unchanged.

April 30, 2023

A number of large oil fields have been detected in the past years, even after running programs of oil explorations. Our oil and gas demand will certainly exceed the available supply in the early twenty first century. This type of situation is called energy crisis. In times of energy crisis there is high demand and limited supply of energy.

April 28, 2023

Everything from which we receive energy is called a source of energy. There are many types of sources of energy.

April 26, 2023

There are many forms of energy. And one type of energy can also be converted into another type of energy.

April 24, 2023

The mixing of gases or particulate matter harmful in the air causes air pollution. Air pollution is not only dangerous for our health, but it also spoils our environment.

April 22, 2023

Air is a mixture of several gases, mainly containing nitrogen, oxygen, carbon dioxide and small amounts of argon, helium, neon, hydrogen, etc. There is also some amount of dust, smoke and water content in the air, the percentage of which varies according to the environment.

April 20, 2023

Air is colorless, odorless and tasteless. It is a mixture of many gases. We can see through it.

April 18, 2023

What does conservation mean? Conservation means to use with caution and frugality. Although there is a lot of water on the earth, there is still a shortage of potable water. Therefore, people should be aware for the proper use of water.

April 16, 2023

If unwanted impurities are found in the water, then the water is no longer drinkable. Such water is called polluted water. Nowadays, the problem of water pollution is becoming so serious that even the water of the rivers, seas, lakes, ponds, etc., is getting much polluted.

April 14, 2023

All the water available on earth is not potable. Potable water is translucent, colorless, odorless and has a flavorful liquid due to dissolution of some salts and gases. If there is no inaccuracy in it, then pure water is tasteless.