Essay on the importance of oxygen and water

Oxygen and water make the earth’s atmosphere livable. They are important for the survival and development of all living organisms. Plants emit the human beings that humans need for their survival. Humans, plants and animals alike need water. It serves several purposes.

Essay on the importance of oxygen and water, 200 words:

Oxygen is one of the main gases present in the Earth’s atmosphere. Oxygen accounts for 21% of the air present in our ecosystem. Oxygen is required by humans and animals for the process of respiration. Plants also lack oxygen during the night.

In the daytime, trees and plants inhale carbon dioxide and take fresh oxygen. It maintains oxygen supply in the air. Oxygen is important for the functioning of the human body. It acts as fuel for the body and keeps it energized. Oxygen is also used for various industrial purposes and recreational activities.

Water is also necessary for the existence of living beings on the earth. It is mainly used for drinking purposes and is important for the health of humans, animals and plants. It helps in removing waste material from the body. This is needed for the proper functioning of brain cells.

It aids digestion and regulates body temperature. It is used for many other purposes including cleaning, washing and sanitation. It is also used for agricultural and industrial purposes. It is interesting, while oxygen and water make life on Earth possible.

Many of these can be dangerous. Excess of oxygen can cause loss of vision, muscle twitch and cough. Similarly, consuming more water than required may affect the kidney. It can also cause hyponatremia, a condition in which the salt and sodium levels in the body actually decrease.

Importance of oxygen and water in hindi (300 words)


The presence of water and oxygen on the planet is the main reason for Earth’s atmosphere to be different from other planets. Both these elements are available in abundance on our planet. We have a continuous supply of water from various sources such as rain, river, drains, oceans and oceans. Oxygen is continuously pumped into the atmosphere by plants and trees around us.

Importance of Oxygen:

Oxygen is one of the basic requirements for our existence. We need oxygen to breathe. Our body emits oxygen and expels carbon dioxide. Our respiratory system needs a constant supply of fresh oxygen. Oxygen acts as fuel for our body.

It enables our cells to produce energy from the food we consume. Oxygen is also stored for industrial use. Many industries require oxygen to run various machines. Some medical treatments also require oxygen. In addition, oxygen is also used to pursue various recreational activities.

Importance of water:

We need to drink adequate amounts of water to lead and lead healthy lives. Water is also required for various other purposes. We need it for cooking, cleaning, washing, sanitation purpose, agriculture and industries. Water forms an essential part in the manufacture of various industrial goods that we need in our regular lives. Water is also used to produce electricity without which we cannot imagine our life.

Animals also require water for their survival. They mainly use it for drinking purposes. They soak themselves in water to beat the scorching heat in the summer months. Water serves as a habitat for aquatic organisms.

Plants should also be watered regularly for growth and survival. Water helps them bring nutrients from the soil which is necessary to keep them green and healthy.


Thus, both oxygen and water are used directly and indirectly by us. These elements maintain ecological balance on the earth and enrich biodiversity.

Essay on the importance of oxygen and water, 400 words:


One of the main life-giving elements on Earth is oxygen. Water, which is a combination of hydrogen and oxygen, is equally important for our existence. These are the most basic requirements for living organisms. A living creature can go without food for a few days but it is difficult to survive for a long time without water.

Without the presence of oxygen, survival is beyond question. We need a constant supply of this fresh air to enable all our body parts to function properly.

Oxygen Source:

We get oxygen from plants. The plants around us extract carbon dioxide from the atmosphere and the oxygen-giving life. The dense forests and lush gardens around us are a great source of oxygen. They continuously flush out oxygen and inhale carbon dioxide to maintain ecological balance.

They also absorb other harmful gases from the atmosphere. This helps to keep the air alive and fit for the organisms. That is why it is advisable to plant more and more trees. A large number of trees in the environment ensure a purer and better environment.

Source of water:

We get water from various sources. Earth surrounds the vast oceans which are the main source of water on the planet. A large number of rivers, lakes, rivers, seas and reservoirs are also available all over the planet. All these sources of water fall under the category of surface water. There is also plenty of ground water in the earth. It is water present below the surface of the earth. It leaks below the surface through porous rocks and mud. It is extracted by digging wells and constructing tube wells.

The water cycle, which occurs naturally, is the main reason that water is abundant in the earth. The water in the oceans evaporates due to the extreme heat of the sun. Surface water also evaporates from the sea, rivers and other sources. As the vapors rise and move into the atmosphere, they begin to cool and condense to shape the clouds.

Clouds become heavy as more and more vapors join and eventually burst. The rain from the clouds fills the rivers, seas and oceans again as rain. Rain water is called pure form of water. So, water is replenished naturally and is abundantly available in the atmosphere.


Both oxygen and water are available in sufficient quantities on our planet. We have been using them for centuries and they are still not out of stock. This is because our environment replenishes them naturally. However, they are no longer as pure and fresh as they used to be.

Importance of oxygen and water in hindi (500 words)


Oxygen is a colorless, tasteless and odorless gas that forms a part of various compounds including water. Oxygen changes to light blue in its liquid and solid form. In places where the temperature is low and the pressure is high, oxygen appears in light orange, red, black, and even metallic colors.

Oxygen and hydrogen combine to form water. Water is a colorless, odorless and tasteless liquid. However, the water in its purest form reflects a pale blue hue. The color blue becomes darker as the water thickness increases. This color is believed to be the result of white light absorption and scattering.

Abundance of water and oxygen on Earth:

Since hydrogen and oxygen are abundantly available in the Earth’s atmosphere, water is also available in huge quantities on our planet. Even though both water and oxygen have been in use for centuries, they are still available in sufficient quantities in the Earth’s atmosphere due to their ability to replenish naturally.

Water replenishes on Earth through the water cycle. The water cycle consists of various stages including evaporation, condensation, and precipitation. Same goes for oxygen, even though we consume it continuously, it is released back into the atmosphere by trees and plants that breathe it continuously.

Role of oxygen in human body:

Humans as well as other mammals and many other species of animals and birds require oxygen to perform various functions of their bodies. It is needed for proper functioning of every cell in the body. Living beings breathe oxygen into their lungs.

Here, the blood absorbs this gas. It is then sent to various cells throughout the body where it is used for cellular respiration. Oxygen is required to produce energy. Through a process called oxidation, oxygen converts food and liquid into energy in the body.

Oxygen repairs our cells and maintains their health. It feeds our brain and keeps our nerves calm. Our body stores oxygen for emergency. There are places where oxygen is not available. Oxygen stored in the body is used as a survival strategy at these locations.

Role of water in human body:

Water is important for the proper functioning of our body as oxygen. Every cell, organ and tissue of our body needs water. Water is needed to control our body temperature. It improves blood oxygen circulation in the body. It acts as a lubricant for the joints. It is helpful in digestion. It helps to flush out the waste materials from our body.

It also plays an important role in the functioning of our brain cells. It is important for us to have sufficient amount of water each day to recoup its losses. Having enough water helps keep energy levels high. It helps speed up physical performance.

Value of water and oxygen for plants:

Plants also need oxygen and water to survive and grow. Plants get oxygen at night. Therefore, just as we need oxygen, they also need this pure gas for life. Plants should also be watered regularly. They absorb water to stay hydrated and green. Water also helps transport nutrients from the soil to the leaves of plants where photosynthesis takes place.


Thus, water and oxygen are needed for the survival of plants and animals as well as humans. They provide life for our environment.

Essay on the importance of oxygen and water, 600 words:


Oxygen and water are available in abundance on our planet. We do not have to pay for the oxygen we breathe nor do we have to pay for the various sources of water present on Earth. That is why we, humans have started taking these elements. Man is progressing in the field of science and technology at the cost of these life-giving elements.

Many of man’s creations such as vehicles, air conditioners, and power plants continuously release toxic gases into the atmosphere that pollute oxygen. Waste products from factories as well as houses are dumped into the water, polluting the water bodies.

Increased level of water pollution:

It is sad that our beautiful rivers, seaside, condensed streams and vast oceans which were once sources of fresh water are now being polluted at a rapid pace. Water pollution has been particularly increasing since the Industrial Revolution. Large quantities of waste from factories are dumped in nearby rivers and seas as these are seen as an easy escape. This causes the water source to become impure.

Water pollution disrupts the lives of marine organisms. Chemical and radioactive pollutants make it difficult for these innocent creatures to survive. Many of them develop various types of diseases that make their life difficult. Unable to withstand the influence of others and sacrifice life. Many species of aquatic organisms have become extinct due to water pollution and many are likely to disappear.

Rivers are a source of drinking water for communities settled along the river. Most of them cannot tolerate water purification systems and rely on the river and flow water for their drinking and cooking needs. However, this water is no longer worth drinking directly. As a result, they give rise to serious diseases. Water pollution also disturbs the food chain and biodiversity and ultimately creates imbalances in the ecosystem.

Increased level of air pollution:

Road vehicles release large amounts of harmful gases into the atmosphere. Toxic gases also emit from a growing number of factories worldwide. They are contributing to the rising level of air pollution. Our atmosphere is being filled with harmful gases like carbon mono-oxide, sulfur dioxide and carbon dioxide. We are no longer taking fresh and pure oxygen from the atmosphere.

Oxygen is, in fact, not available in its pure form. We extract all types of chemical gases from the atmosphere which cause various diseases. Lung diseases are increasing these days due to increasing amount of air pollution in the atmosphere. Air pollution is also affecting various other animals. It is as difficult for them to breathe as it is for humans.

Forests are a rich source of fresh oxygen. But unfortunately, humans are increasingly cutting down forests. Thus, lost oxygen is not being replenished in the system and the amount of harmful gases is increasing thus increasing air pollution.

We should save water and oxygen:

If we continue to cut down trees, drive vehicles that cause fumes, burn fuel in factories and dispose of chemical waste in water, then our planet is not fit for survival of living beings after a few decades Will remain We are already seeing the negative effects of increasing water and air pollution and the situation will only get worse in the coming times. Each of us should contribute to prevent air and water pollution.


Children should be sensitive about the need to keep water bodies and air clean. They should also be taught about the various ways in which these tasks can be completed. The government of different countries around the world should come up with plans to reduce pollution levels in their respective countries and citizens should follow them.


by Abdullah Sam
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