Class 9 Science - Chapter Natural Resources NCERT Solutions | Write a note on how forests influence th
Write a note on how forests influence the quality of our air, soil and water resources.
Forests influence the quality of our air, soil, and water resources in various ways.
Some of them are:
(i) Adds nutrients to the soil due to the lot of vegetation present in the forest getting decomposed . Water : Forest helps in bringing rain and increasing the level of water in the underground and water bodies.
(ii) Forests prevent soil erosion. Roots of plants bind the soil tightly in a way that the surface of the soil cannot be eroded away by wind, water, etc.
(iii) Forests maintain the oxygen level in the atmosphere and also reduce the carbon dioxide level. Forests maintain the temperature of the environment.
More Questions From Class 9 Science - Chapter Natural Resources
- Q:-
List any three human activities that you think would lead to air pollution.
- Q:-
What causes winds?
- Q:-
Why is the atmosphere essential for life?
- Q:-
Why do organisms need water?
- Q:-
Why is water essential for life?
- Q:-
We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
- Q:-
List any three human activities which would lead to an increase in the carbon dioxide content of air.
- Q:-
How does the atmosphere act as a blanket?
- Q:-
How is our atmosphere different from the atmospheres on Venus and Mars?
- Q:-
You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?
Popular Questions of Class 9 Science
- Q:-
Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin?
- Q:-
State the universal law of gravitation.
- Q:-
Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, cold-drink, smell of perfume.
- Q:-
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (Fig. 11.3). Let us take it that the force acts on the object through the displacement. What is the work done in this case?
- Q:-
What is meant by a pure substance?
- Q:-
How does the sound produced by a vibrating object in a medium reach your ear?
- Q:-
In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium observations are in agreement with the law of conservation of mass.
sodium carbonate + ethanoic acid → sodium ethanoate + carbon dioxide + water
- Q:-
What are canal rays?
- Q:-
State any two conditions essential for good health.
- Q:-
Who discovered cells, and how?
Recently Viewed Questions of Class 9 Science
- Q:-
Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.
Prokaryotic Cell Eukaryotic Cell 1. Size : generally small (1-10 μm)
1 μm = 10-6 m1. Size generally large (5-100 μm) 2. Nuclear region: ________________
and known as _________________2. Nuclear region: well defined
andsurrounded by a nuclear
membrane3. Chromosome: single
3. More than one chromosome 4. Membrane-bound cell organelles absent 4. _______________________
_______________________ - Q:-
What is the physical state of water at:
a. 250*C b. 100*C ?
- Q:-
What do we call the gravitational force between the earth and an object?
- Q:-
What do you think would be the observation if the α-particle scattering experiment is carried out using a foil of a metal other than gold?
- Q:-
A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
- Q:-
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
- Q:-
Explain how defects in a metal block can be detected using ultrasound.
- Q:-
You find your mass to be 42 kg on a weighing machine. Is your mass more or less than 42 kg?
- Q:-
List the points of differences between homogeneous and heterogeneous mixtures.
- Q:-
Give reasons for the following observation:
The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.
- All Chapters Of Class 9 Science
- All Subjects Of Class 9