CBSE Class 9 Science
Topic: Natural Resources
Very Short Answer
Q1) What are the two compounds that contain both oxygen and nitrogen?
Ans: Proteins and nucleic acids are the compounds used in both oxygen and nitrogen.
Q2) What is ozone?
Ans: Ozone layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun.
Q3) Where we can find the fresh water?
Ans: Fresh water is found frozen in the ice- caps at the two poles and on snow covered mountains.
Q4) What is smog?
Ans: Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air.
Q5) What is global warming?
Ans: The average temperature of the earth increases due to the presence of greenhouse gases is called global warming.
Click below to download practice worksheet for CBSE Class 9 Science Natural Resources Worksheet Set B