All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 8 Exam  >  Class 8 Questions  >  The relative contribution of various greenhou... Start Learning for Free
SaveJoin the Discussion on the App
The relative contribution of various greenhouse gases to total global warming will not be
  • a)
    CFCs – 14%
  • b)
    N2O – 12%
  • c)
    Carbon dioxide – 60%
  • d)
    Methane – 20%
Correct answer is option 'B'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Most Upvoted Answer
The relative contribution of various greenhouse gases to total global ...
The relative contribution of greenhouse gases to total global warming can vary, but the percentage provided for N2O (nitrous oxide) is not accurate as of my last update. Please note that specific percentages may change over time due to ongoing research and changes in emissions.
Attention Class 8 Students!
To make sure you are not studying endlessly, EduRev has designed Class 8 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 8.
< Previous Question Next Question >
Explore Courses for Class 8 exam

Similar Class 8 Doubts

NCERT TEXTBOOK QUESTIONS SOLVED Q. 1. What are the different ways in which water gets contaminated?Ans. Water gets contaminated in the following ways:(i) Many industries discharge harmful chemicals to rivers and streams.(ii) Water gets contaminated when sewage is disposed off in rivers.(iii) Pesticides, weedicides and other chemicals also dissolve in water and get contaminated.(iv) Breeding of microorganisms makes water polluted. Q. 2. At an individual level, how can you help reduce air pollution?Ans. By this process we can reduce air pollution:(i) We should plant trees to reduce the level of carbon dioxide and air pollution.(ii) By using CNG and unleaded petrol in our vehicle.(iii) By using public transport as far as possible.(iv) By giving general awareness about air pollution to our family and friends. Q . 3. Clear, transparent water is always fit for drinking. Comment.Ans. Clear, transparent water is always fit for drinking. This is not true, because many microorganisms are present in it. So we should clean it by boiling. Q. 4. You are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents.Ans. A list of measures that would help our town to ensure the supply of clean water to all its residents–(i) Proper cleaning of water tank.(ii) Chlorine tablets should be made available.(iii) To get clean water in every household, it is necessary that water reaching the houses should be treated. Q. 5. Explain the differences between pure air and polluted air.Ans. Pure air is free from germs and harmful gases. It contains 78% nitrogen, 21% oxygen and small amount of other gases and dust particles.Polluted air contains harmful gases and unwanted substances. Q. 6. Explain circumstances leading to acid rain. How does acid rain affect us?Ans. Some pollutants like sulphur dioxide and nitrogen dioxide react with the water vapour present in the atmosphere to form sulphuric acid and nitric acid. The acid drops down with rain, making the rain acidic. This is called acid rain. Acid rain affects us in many ways.(i) Acid rain corrodes the marble of the monument.(ii) Acid rain damages building and sculptural materials.(iii) Acid rain damages fresh water also.(iv) Acid rain also damages our crops and makes it poisonous.(v) Acid rain damages the leaves of plants. Q. 7. Which of the following is not a greenhouse gas?(

Read the given passages/ poems and answer the questions that follows.The world is now warmer than at almost any time since the end of the last ice age and, on present trends, will continue to reach a record high for the entire period since the dawn of civilization, a study has found.The study published in the journal Science, aims to give a global overview of Earth’s temperatures over the past 11,300 years - a relatively balmy period known as the Holocene that began after the last major ice age ended and encompasses all of recorded human civilization.Their data (compiled by studying such things as ice cores, fossils and ocean sentiment) looked back over a much longer era than previous research, which went back 1,500 years.Scientists say it is further evident that modern-day global warming isn’t natural, but the result of rising carbon dioxide emissions that have rapidly grown since the Industrial Revolution began roughly 250 years ago. Scientists say that if natural factors were still governing the climate, the Northern Hemisphere would probably be destined to freeze over again in several thousand years. Instead, scientists believe the enormous increase in greenhouse gases caused by industrialization will almost certainly prevent that.Shaun Marcott, a geologist at Oregon State University, says “global temperatures are warmer than about 75 percent of anything we’ve seen over the last 11,000 years or so.” The other way to look at that is, 25 percent of the time since the last ice age, it’s been warmer than now.It’s taken just 100 years for the average temperature to change by 1.3 degrees, when it took 5,000 years to do that before. By the end of the century, climate warming models predict an additional increase of 2 to 11.5 degrees, due largely to carbon emissions, the study noted.Q. True or false: Scientist predict the earth will freeze over because of increased greenhouse gases.

Read the given passages/ poems and answer the questions that follows.The world is now warmer than at almost any time since the end of the last ice age and, on present trends, will continue to reach a record high for the entire period since the dawn of civilization, a study has found.The study published in the journal Science, aims to give a global overview of Earth’s temperatures over the past 11,300 years - a relatively balmy period known as the Holocene that began after the last major ice age ended and encompasses all of recorded human civilization.Their data (compiled by studying such things as ice cores, fossils and ocean sentiment) looked back over a much longer era than previous research, which went back 1,500 years.Scientists say it is further evident that modern-day global warming isn’t natural, but the result of rising carbon dioxide emissions that have rapidly grown since the Industrial Revolution began roughly 250 years ago. Scientists say that if natural factors were still governing the climate, the Northern Hemisphere would probably be destined to freeze over again in several thousand years. Instead, scientists believe the enormous increase in greenhouse gases caused by industrialization will almost certainly prevent that.Shaun Marcott, a geologist at Oregon State University, says “global temperatures are warmer than about 75 percent of anything we’ve seen over the last 11,000 years or so.” The other way to look at that is, 25 percent of the time since the last ice age, it’s been warmer than now.It’s taken just 100 years for the average temperature to change by 1.3 degrees, when it took 5,000 years to do that before. By the end of the century, climate warming models predict an additional increase of 2 to 11.5 degrees, due largely to carbon emissions, the study noted.Q.‘Balmy’ means

Read the given passages/ poems and answer the questions that follows.The world is now warmer than at almost any time since the end of the last ice age and, on present trends, will continue to reach a record high for the entire period since the dawn of civilization, a study has found.The study published in the journal Science, aims to give a global overview of Earth’s temperatures over the past 11,300 years - a relatively balmy period known as the Holocene that began after the last major ice age ended and encompasses all of recorded human civilization.Their data (compiled by studying such things as ice cores, fossils and ocean sentiment) looked back over a much longer era than previous research, which went back 1,500 years.Scientists say it is further evident that modern-day global warming isn’t natural, but the result of rising carbon dioxide emissions that have rapidly grown since the Industrial Revolution began roughly 250 years ago. Scientists say that if natural factors were still governing the climate, the Northern Hemisphere would probably be destined to freeze over again in several thousand years. Instead, scientists believe the enormous increase in greenhouse gases caused by industrialization will almost certainly prevent that.Shaun Marcott, a geologist at Oregon State University, says “global temperatures are warmer than about 75 percent of anything we’ve seen over the last 11,000 years or so.” The other way to look at that is, 25 percent of the time since the last ice age, it’s been warmer than now.It’s taken just 100 years for the average temperature to change by 1.3 degrees, when it took 5,000 years to do that before. By the end of the century, climate warming models predict an additional increase of 2 to 11.5 degrees, due largely to carbon emissions, the study noted.Q. This article could be described as a ___ look at the future.

Top Courses for Class 8View all

Top Courses for Class 8

The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer?
Question Description
The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer?.
Solutions for The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 8. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free.
Here you can find the meaning of The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The relative contribution of various greenhouse gases to total global warming will not bea)CFCs – 14%b)N2O – 12%c)Carbon dioxide – 60%d)Methane – 20%Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 8 tests.
Explore Courses for Class 8 exam

Top Courses for Class 8

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup