Ask questions which are clear, concise and easy to understand.

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Anmol Gupta 1 day, 18 hours ago

Communication skills
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Bhavya Gupta 1 day, 8 hours ago

Okay bhai I will send in your I'd

Punith Venkatesh 1 day, 19 hours ago

Kaun hai ye log kahan se aathe hai?

Ayush Raj Milan 1 day, 20 hours ago

Aaaaaaa! Thhooo
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Vivek Singh 1 day, 20 hours ago

What is self respect
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Anju Tanwar 18 hours ago

rabi and kharif
4
The air around us forms the atmosphere of the earth. It extends from the ground to about 11 km into space. It gets denser due to gravity as we approach the ground. It has the right amount of pressure and composition to sustain life. The atmosphere above the earth’s surface forms a blanket of gases, protecting us from many harmful radiations that come from outer space. This part of the atmosphere is called the ozone layer. Why is Air Important? Air is a mixture of various gases found in the Earth’s atmosphere. Usually, the air is colourless, odourless and tasteless. It consists of about 78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide, and trace amounts of other gases. Air plays a vital role in the existence of life on earth. The three essential roles of air are as follows: Air for Breathing Air for Combustion Air for Regulating Temperature Air for Breathing  Air contains two essential components: Oxygen and Carbon dioxide, which makes life possible. Oxygen is required by plants and animals to convert the chemical energy stored in food into energy that they can use for various metabolic processes. During the process of respiration, oxygen in the air reacts with molecules from food to produce energy. In the process, carbon dioxide is released. Plants consume carbon dioxide. During the day time or in the presence of sunlight, all green plants convert light energy into chemical energy. In this process, plants convert the carbon dioxide molecule into glucose (food) molecules, and oxygen is released as a byproduct. This process is known as photosynthesis. Thus, we need air to gain energy from food and plants need it to store energy in the form of food. This balance sustains all life on earth. Air for Combustion  What is Combustion? Combustion is a chemical process in which, the fuel combines with oxygen gas to release energy in the form of heat and light. This heat can be used to produce electricity, run our cars and also for cooking. During combustion, oxygen in the atmosphere combines with the carbon atoms to produce carbon dioxide and hydrogen atoms to produce water. In fact, without oxygen, one cannot use these fuels for our daily needs. However, too much oxygen can cause uncontrolled burning and explosions. Even the tiniest spark can set off fires. However, this does not happen because of the presence of nitrogen gas in the atmosphere. Nitrogen does not support combustion and thus prevents the excess reactivity of oxygen. Thus, these two components are essential to ensure that energy from the fuel can be used in a controlled manner. Air for Regulating Temperatures Upon heating, the density of air reduces, and it rises upwards. Similarly, cold air is denser than the hot air which sinks towards the ground. As the hot air rises, it creates a space of low pressure where the cold air rushes in and occupy this space. Winds are formed due to this phenomenon. As the temperature of air increases, it raises up. The colder air from the surroundings enters into it, get heated up, and the cycle repeats. The rising of the hot air transfers its heat into outer space and sinks back down. In this way, heat is transferred from hotter regions to colder regions. This is known as temperature regulation, and the process of transferring heat is called convection. Without the atmosphere, the daytime temperatures on earth would be extremely high and night time temperatures would dip below freezing. Thus, the air (through the greenhouse effect) would act like a blanket, providing a layer of insulation for life on earth. Other natural resources like water, land, rivers, and mountains play a key role in sustaining life on earth by providing a sustainable environment for life. Essentially, life cannot survive without these vital components. To learn more about nature, the air, different components of nature required for sustaining life on earth, register at BYJU’S. Frequently Asked Questions 1. Is breathing combustion? From a biological perspective, breathing resembles combustion, where chemical bonds are broken down and oxygen is used up; which then produces carbon dioxide. 2. Is air needed for life? One of the most integral components of air is oxygen, which is important for all life on earth. However, certain microorganisms can survive without this element. These organisms are called anaerobes. 3. Which gas is essential for burning and breathing? Oxygen is crucial for burning and combustion. It is also important for breathing. 4. What is the scientific name for air? Technically, “air” does not have a scientific name as it is a mixture of substances. Chemical names can be given to “pure” substances such as water (H20) and oxygen (O2). 5. Why is air called the “breath of life?” Air contains oxygen, which is the most important element for all life on earth. More to Read: Biotic And Abiotic Factors    Learn Better through BYJU'S Quiz  Put your understanding of this concept to test by answering a few MCQs. Click ‘Start Quiz’ to begin! Select the correct answer and click on the “Finish” button Check your score and answers at the end of the quiz Start Quiz BIOLOGY Related LinksOzone Layer DefinitionPeristalsis MeaningWhat Is a HeterotrophMonocot StemProkaryotic MeaningWhat Is SpinningEchinodermata ExamplesHuman Anatomy and PhysiologySolanaceae FamilyNervous Tissue Diagram   CBSE Sample Papers CBSE Sample Papers Class 8 Science CBSE Sample Papers Class 9 Science CBSE Sample Papers Class 10 Science CBSE Sample Papers Class 11 Physics CBSE Sample Papers Class 11 Chemistry CBSE Sample Papers Class 11 Biology CBSE Sample Papers Class 12 Physics CBSE Sample Papers Class 12 Chemistry CBSE Sample Papers Class 12 Biology CBSE Previous Year Question Papers CBSE Previous Year Question Papers Class 10 Science CBSE Previous Year Question Papers Class 12 Physics CBSE Previous Year Question Papers Class 12 Chemistry CBSE Previous Year Question Papers Class 12 Biology ICSE Sample Papers ICSE Sample Papers Class 8 Physics ICSE Sample Papers Class 8 Chemistry ICSE Sample Papers Class 8 Biology ICSE Sample Papers Class 9 Physics ICSE Sample Papers Class 9 Chemistry ICSE Sample Papers Class 9 Biology ICSE Sample Papers Class 10 Physics ICSE Sample Papers Class 10 Chemistry ICSE Sample Papers Class 10 Biology ISC Sample Papers Class 11 Physics ISC Sample Papers Class 11 Chemistry ISC Sample Papers Class 11 Biology ISC Sample Papers Class 12 Physics ISC Sample Papers Class 12 Chemistry ISC Sample Papers Class 12 Biology ICSE Previous Year Question Papers ICSE Previous Year Question Papers Class 10 Physics ICSE Previous Year Question Papers Class 10 Chemistry ICSE Previous Year Question Papers Class 10 Maths ISC Previous Year Question Papers class 12 ISC Previous Year Question Papers Class 12 Physics ISC Previous Year Question Papers Class 12 Chemistry ISC Previous Year Question Papers Class 12 Biology Join BYJU'S Learning Program   Grade/Exam Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8  Class 9 Class 10 Class 11 Class 12 IAS CAT Bank Exam GATE  Submit Leave a Comment Your Mobile number and Email id will not be published. Required fields are marked * * Send OTP * Post Comment COURSES CBSE ICSE CAT IAS JEE NEET Commerce JEE Main NCERT JEE Advanced CBSE Sample Papers CBSE Question Papers EXAMS CAT Exam GATE Exam IAS Exam UPSC Syllabus UPSC 2021 Bank Exam Government Exams CLASSES Class 1st - 3rd Class 4th - 5th Class 6th - 10th Class 11th - 12th EXAM PREPARATION Free CAT Prep Free IAS Prep Maths Physics Chemistry Biology RESOURCES Blog Videos All Products DSSL COMPANY About Us Contact Us Investors Careers BYJU'S in Media Students Stories - The Learning Tree Faces of BYJU'S – Life at BYJU'S Social Initiative - Education for All BYJU'S APP FAQ Support FREE TEXTBOOK SOLUTIONS NCERT Solutions NCERT Exemplar NCERT Solutions for Class 6 NCERT Solutions for Class 7 NCERT Solutions for Class 8 NCERT Solutions for Class 9 NCERT Solutions for Class 10 NCERT Solutions for Class 11 NCERT Solutions for Class 12 RD Sharma Solutions RS Aggarwal Solutions ICSE Selina Solutions STATE BOARDS Maharashtra Gujarat Tamil Nadu Karnataka Kerala Andhra Pradesh Telangana Uttar Pradesh Bihar Rajasthan Madhya Pradesh West Bengal FOLLOW US   Disclaimer   Privacy Policy   Terms of Services   Sitemap © 2021, BYJU'S. All rights reserved.     BOOK Free Class
  • 2 answers

Nikita Nikita 23 hours ago

What is your class

Nikita Nikita 23 hours ago

What is this
The air around us forms the atmosphere of the earth. It extends from the ground to about 11 km into space. It gets denser due to gravity as we approach the ground. It has the right amount of pressure and composition to sustain life. The atmosphere above the earth’s surface forms a blanket of gases, protecting us from many harmful radiations that come from outer space. This part of the atmosphere is called the ozone layer. Why is Air Important? Air is a mixture of various gases found in the Earth’s atmosphere. Usually, the air is colourless, odourless and tasteless. It consists of about 78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide, and trace amounts of other gases. Air plays a vital role in the existence of life on earth. The three essential roles of air are as follows: Air for Breathing Air for Combustion Air for Regulating Temperature Air for Breathing  Air contains two essential components: Oxygen and Carbon dioxide, which makes life possible. Oxygen is required by plants and animals to convert the chemical energy stored in food into energy that they can use for various metabolic processes. During the process of respiration, oxygen in the air reacts with molecules from food to produce energy. In the process, carbon dioxide is released. Plants consume carbon dioxide. During the day time or in the presence of sunlight, all green plants convert light energy into chemical energy. In this process, plants convert the carbon dioxide molecule into glucose (food) molecules, and oxygen is released as a byproduct. This process is known as photosynthesis. Thus, we need air to gain energy from food and plants need it to store energy in the form of food. This balance sustains all life on earth. Air for Combustion  What is Combustion? Combustion is a chemical process in which, the fuel combines with oxygen gas to release energy in the form of heat and light. This heat can be used to produce electricity, run our cars and also for cooking. During combustion, oxygen in the atmosphere combines with the carbon atoms to produce carbon dioxide and hydrogen atoms to produce water. In fact, without oxygen, one cannot use these fuels for our daily needs. However, too much oxygen can cause uncontrolled burning and explosions. Even the tiniest spark can set off fires. However, this does not happen because of the presence of nitrogen gas in the atmosphere. Nitrogen does not support combustion and thus prevents the excess reactivity of oxygen. Thus, these two components are essential to ensure that energy from the fuel can be used in a controlled manner. Air for Regulating Temperatures Upon heating, the density of air reduces, and it rises upwards. Similarly, cold air is denser than the hot air which sinks towards the ground. As the hot air rises, it creates a space of low pressure where the cold air rushes in and occupy this space. Winds are formed due to this phenomenon. As the temperature of air increases, it raises up. The colder air from the surroundings enters into it, get heated up, and the cycle repeats. The rising of the hot air transfers its heat into outer space and sinks back down. In this way, heat is transferred from hotter regions to colder regions. This is known as temperature regulation, and the process of transferring heat is called convection. Without the atmosphere, the daytime temperatures on earth would be extremely high and night time temperatures would dip below freezing. Thus, the air (through the greenhouse effect) would act like a blanket, providing a layer of insulation for life on earth. Other natural resources like water, land, rivers, and mountains play a key role in sustaining life on earth by providing a sustainable environment for life. Essentially, life cannot survive without these vital components. To learn more about nature, the air, different components of nature required for sustaining life on earth, register at BYJU’S. Frequently Asked Questions 1. Is breathing combustion? From a biological perspective, breathing resembles combustion, where chemical bonds are broken down and oxygen is used up; which then produces carbon dioxide. 2. Is air needed for life? One of the most integral components of air is oxygen, which is important for all life on earth. However, certain microorganisms can survive without this element. These organisms are called anaerobes. 3. Which gas is essential for burning and breathing? Oxygen is crucial for burning and combustion. It is also important for breathing. 4. What is the scientific name for air? Technically, “air” does not have a scientific name as it is a mixture of substances. Chemical names can be given to “pure” substances such as water (H20) and oxygen (O2). 5. Why is air called the “breath of life?” Air contains oxygen, which is the most important element for all life on earth. More to Read: Biotic And Abiotic Factors    Learn Better through BYJU'S Quiz  Put your understanding of this concept to test by answering a few MCQs. Click ‘Start Quiz’ to begin! Select the correct answer and click on the “Finish” button Check your score and answers at the end of the quiz Start Quiz BIOLOGY Related LinksOzone Layer DefinitionPeristalsis MeaningWhat Is a HeterotrophMonocot StemProkaryotic MeaningWhat Is SpinningEchinodermata ExamplesHuman Anatomy and PhysiologySolanaceae FamilyNervous Tissue Diagram   CBSE Sample Papers CBSE Sample Papers Class 8 Science CBSE Sample Papers Class 9 Science CBSE Sample Papers Class 10 Science CBSE Sample Papers Class 11 Physics CBSE Sample Papers Class 11 Chemistry CBSE Sample Papers Class 11 Biology CBSE Sample Papers Class 12 Physics CBSE Sample Papers Class 12 Chemistry CBSE Sample Papers Class 12 Biology CBSE Previous Year Question Papers CBSE Previous Year Question Papers Class 10 Science CBSE Previous Year Question Papers Class 12 Physics CBSE Previous Year Question Papers Class 12 Chemistry CBSE Previous Year Question Papers Class 12 Biology ICSE Sample Papers ICSE Sample Papers Class 8 Physics ICSE Sample Papers Class 8 Chemistry ICSE Sample Papers Class 8 Biology ICSE Sample Papers Class 9 Physics ICSE Sample Papers Class 9 Chemistry ICSE Sample Papers Class 9 Biology ICSE Sample Papers Class 10 Physics ICSE Sample Papers Class 10 Chemistry ICSE Sample Papers Class 10 Biology ISC Sample Papers Class 11 Physics ISC Sample Papers Class 11 Chemistry ISC Sample Papers Class 11 Biology ISC Sample Papers Class 12 Physics ISC Sample Papers Class 12 Chemistry ISC Sample Papers Class 12 Biology ICSE Previous Year Question Papers ICSE Previous Year Question Papers Class 10 Physics ICSE Previous Year Question Papers Class 10 Chemistry ICSE Previous Year Question Papers Class 10 Maths ISC Previous Year Question Papers class 12 ISC Previous Year Question Papers Class 12 Physics ISC Previous Year Question Papers Class 12 Chemistry ISC Previous Year Question Papers Class 12 Biology Join BYJU'S Learning Program   Grade/Exam Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8  Class 9 Class 10 Class 11 Class 12 IAS CAT Bank Exam GATE  Submit Leave a Comment Your Mobile number and Email id will not be published. Required fields are marked * * Send OTP * Post Comment COURSES CBSE ICSE CAT IAS JEE NEET Commerce JEE Main NCERT JEE Advanced CBSE Sample Papers CBSE Question Papers EXAMS CAT Exam GATE Exam IAS Exam UPSC Syllabus UPSC 2021 Bank Exam Government Exams CLASSES Class 1st - 3rd Class 4th - 5th Class 6th - 10th Class 11th - 12th EXAM PREPARATION Free CAT Prep Free IAS Prep Maths Physics Chemistry Biology RESOURCES Blog Videos All Products DSSL COMPANY About Us Contact Us Investors Careers BYJU'S in Media Students Stories - The Learning Tree Faces of BYJU'S – Life at BYJU'S Social Initiative - Education for All BYJU'S APP FAQ Support FREE TEXTBOOK SOLUTIONS NCERT Solutions NCERT Exemplar NCERT Solutions for Class 6 NCERT Solutions for Class 7 NCERT Solutions for Class 8 NCERT Solutions for Class 9 NCERT Solutions for Class 10 NCERT Solutions for Class 11 NCERT Solutions for Class 12 RD Sharma Solutions RS Aggarwal Solutions ICSE Selina Solutions STATE BOARDS Maharashtra Gujarat Tamil Nadu Karnataka Kerala Andhra Pradesh Telangana Uttar Pradesh Bihar Rajasthan Madhya Pradesh West Bengal FOLLOW US   Disclaimer   Privacy Policy   Terms of Services   Sitemap © 2021, BYJU'S. All rights reserved.     BOOK Free Class
  • 0 answers
  • 1 answers

Adarsh Kumar 2 days ago

Solve EX- 12.5 Ka 10 no. From R.D. SHARMA
  • 1 answers
The equation of the line parallel to the y-axis is x = k, where 'k' is any real number. For example, considering the equation of a line, x = 3, for any value of 'y' the value of 'x' is always equal to 3.
  • 2 answers

Tripti Garg 1 day, 6 hours ago

She was also physically disabled but she never let it to be her weakness that is a point of inspiration for the other handicapped pe
Evelyn Glennie became a source of inspiration for the deaf and handicapped children as she has succeeded in becoming a world renowned solo percussionist despite being hearing disabled. She has achieved this feat by sensing the music through her body.
  • 1 answers

H :H Harmeet Kaur 1 day, 23 hours ago

I am fine
  • 1 answers

Divyansh Jain 2 days, 2 hours ago

General Pervez Musharraf became President of Pakistan in 1999.
  • 1 answers

Nikita Latwal 2 days, 4 hours ago

Hlo
  • 1 answers

Chirag Goyal 19 hours ago

The northerns plain are mainly formed by alluvial deposits. These plain are formed by the major three rivers- the Indus , the Ganga and the Brahmaputra with their tributaries and these rivers are main reason for the formation of northern plains. These plains are completely formed of alluvial soil.
  • 2 answers

Anju Tanwar 18 hours ago

elements which looses H+ ions in water are acid where as elements which looses OH‐ ions when dissolved in water are called as base

Amit Chaudhary 2 days, 15 hours ago

Acids are sour in taste And bases is bitter in taste.
  • 5 answers

Uzaif Khan 1 day, 19 hours ago

Zero

Aman Kumar 1 day, 20 hours ago

Zero

Manshi Shahu 1 day, 22 hours ago

Zero

Anshu Kumar Ix 'A' 2710 2 days, 8 hours ago

Acceleration is zero

Jatin Agarwal 2 days, 16 hours ago

Zero
  • 3 answers

Mugdha ... 17 hours ago

1/2

Pranjal Yadav 2 days, 1 hour ago

Hi

Neeraj Pandey 2 days, 7 hours ago

The Probability of occurring Head on tossing a Coin is 1/2
  • 2 answers

Tripti Garg 1 day, 6 hours ago

He said that he was busy that day

Pushpanjali Meravi 2 days, 18 hours ago

He said that he was busy today
  • 1 answers

Information Dakaiti 2 days, 18 hours ago

A black is just an old star which attract bodies . There is not so much information about this because we can't discover the whole blackhole
  • 0 answers

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