MEDIUM
9th CBSE
IMPORTANT
Earn 100

Why does the percentage of gases like oxygen, nitrogen and carbon dioxide remain almost the same in the atmosphere? 

Important Questions on Natural Resources

MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 40
Why does moon have very cold and very hot temperature variations e.g.-190°C-110°C even though it is at the same distance from the sun as the earth is?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 41
Why do people love to fly kites near the seashore?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 42

Why does Mathura refinery pose problems to the Taj Mahal?

MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 43
Why do not lichens occur in Delhi whereas they commonly grow in Manali or Darjeeling?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 44
Why does water need conservation even though large oceans surround the land masses?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 45
There is mass mortality of fishes in a pond. What may be the reasons?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 46
Lichens are called pioneer colonisers of bare rock. How can they help in formation of soil?
MEDIUM
9th CBSE
IMPORTANT
NCERT Exemplar Science - Class 9>Chapter 14 - Natural Resources>Short Answer Questions>Q 47
"Soil is formed by water". If you agree to this statement then give reasons.