NCERT Solutions for Class 9 Science Chapter 14 : Natural Resources

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The NCERT Solutions for Class 9 Science Chapter 14 Natural Resources are provided in this article. Some of the impirtant topics of Class 9 Science Chapter 14 Natural Resources include:

The role of the atmosphere in climate control
Biogeochemical cycles
Ozone Layer

Download: NCERT Solutions for Class 9 Science Chapter 14 pdf

NCERT Solutions for Class 9 Science Chapter 14

NCERT Solutions class 9 science chapter 15

Important Topics for Class 9 Science Chapter 14 Natural Resources

Natural resources are the resources which exists without the influence of any artificial influence or any modifications by the humankind such as solar energy, wind, water, petroleum etc. The resources available on the Earth and the energy from the Sun are necessary to meet the basic requirements of all life-forms on the Earth.

The Role of Atmosphere in Climate Control

Atmosphere helps provide protection from radiation and cosmic rays emitted by the outer space. It acts as a blanket to sheild the Earth from harmful conditions.

Example: Why is the Atmosphere Important?

Solution: Atmosphere is important due to the fact:

Important gases, including carbon dioxide and oxygen are found in the atmosphere.
Plants and trees require carbon dioxide, which is found in the atmosphere, for photosynthesis. It rather helps sustain life.
The Atmosphere is responsible to protect organisms from damagin UV rays produced by the Sun.

Biogeochemical Cycles

Biogeochemical cycle can be defined as the continuous flow of nutrients between biotic and abiotic components found in the ecosystem.

Some of the vital biogeochemical cycle found in a closed system include:

Carbon Cycle
Oxygen Cycle
Hydrogen Cycle
Phosphorus Cycle
Nitrogen Cycle
Sulphur Cycle

Ozone Layer

Ozone layer can be defined as a region present in the Earth's stratosphere responsible to absorb most of the Sun's ultraviolet radiation (UV rays) to sheild organisms from damaging conditions.

Ozone layer depletion can cause several reactions.
For example, when chlorine is discharged, it can potentially react with ozone (O₃) in order to generate chlorine monoxide (ClO) and oxygen (O₂).

Thus, Cl + O₃ = ClO + O₂

Check Out:

Chapter Related Links
Hydrosphere	Carbon Cycle	Importance of Air
The nitrogen-cycle	The water-cycle	Types of Winds
Soil Pollution	Fossil Fuel	Minerals
Ozone Layer Depletion	Chlorofluorocarbons	Components of Air
Soil Erosion	Components of Ecosystem	Nitrogen Fixation

Also Check:

Important Science Study Guides
Named Reactions	Periodic Table	Difference between in biology
Difference between in physics	Physics Constants	Difference between in chemistry

CBSE X Related Questions

1.
How does the change in curvature of the eye lens help us in the process of seeing the nearby objects clearly?
View Solution
2.
(a) Study the given electric circuit in which 2 A electric current is flowing between points X and Y.

(i) Using the battery, key, voltmeter and ammeter in this given electric circuit, redraw a circuit diagram in which 2 \(\Omega\) and 4 \(\Omega\) resistors are connected between X and Y in parallel combination.
(ii) Circuit drawn by you, in which resistors are connected in parallel combination, calculate the electric current flowing through 4 \(\Omega\) resistor.
View Solution
3.
In human beings, the implantation of fertilised egg takes place in which part of female reproductive system?
- Oviduct
- Cervix
- Uterus
- Vagina
View Solution
4.
Sex is determined by different factors in various species. However, in human beings, it is determined genetically. Which amongst the following option(s) is/are correct for human beings ?
Gamete carrying X chromosome from female parent.
Gamete carrying X chromosome from male parent.
Gamete carrying Y chromosome from male parent.
- (ii) and (iii)
- (i) only
- (i) and (iii)
- (iii) only
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5.
Which structure in a leaf is mainly responsible for gaseous exchange?
- Xylem
- Stomata
- Phloem
- Cuticle
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6.
The reasons for excessive generation of wastes are:
(i) Use and throw policy.
(ii) Increased availability of packaged food.
(iii) Increased construction wastes.
(iv) Non-sorting of dry and wet wastes
- (i), (iii) and (iv)
- (i), (ii) and (iii)
- (i), (ii), (iii) and (iv)
- (ii), (iii) and (iv)
View Solution