NCERT Solutions for Class 9 Science Chapter 14

NCERT Solutions for Class 9 Science Chapter 14: The NCERT solutions for Class 9 Science are prepared to help students easily understand all the concepts. Natural Resources is an important chapter in the Biology section of the Class 9 Science syllabus. Embibe’s academic experts have solved the questions from this chapter and have presented them in such a way that any student can understand them without much effort.

These NCERT solutions will be beneficial for students to complete their assignments on time. The solutions will also help in the quick revision of the chapter before the exam. Candidates can download the NCERT solutions for Class 9 Science Chapter 14 PDF from here. Refer to the NCERT solutions provided by Embibe enhances conceptual knowledge among the students. Students will be able to score excellent marks after learning the chapter’s concepts through the solutions. Read this article to know the solutions to the NCERT questions for Class 9 Science Chapter 14.

CBSE Class 9 Science Chapter 14: Natural Resources

Before jumping into further details, let us first look into the different sections and sub-sections included in this chapter:

NCERT Solutions for Class 9 Science Chapter 14: Free PDFs

Here are the solutions to in-text questions and exercises in the chapter – Natural Resources. All the solutions have been solved by the academic experts at Embibe. If students want to study offline, then they can also download the NCERT solutions for Class 9 Science chapter 14 PDF.

NCERT Solutions for Class 9 Chapter 14: Solved In-text Questions

Q.1. Why is the atmosphere essential for life?

Solution: The atmosphere is essential for life due to the following reasons:

• It prevents the sudden increase in temperature during the day and slows down the escape of heat into the outer space during the night to maintain the average temperature of the earth reasonably steady. In this way, the atmosphere acts as a blanket.
• It contains a mixture of gases that are essential for life to sustain on the earth.
• The Ozone layer present in the atmosphere protects the earth from the harmful solar radiations by preventing UV rays from reaching the earth surface.
• The rain and rainfall patterns are decided by the wind generated by the movement of the air present in the atmosphere.
• The water cycle is incomplete without an atmosphere.

Q.2. Why is water essential for life?

Solution: Water is essential for life for the following reasons:

• The human body is made up of 60-70% water. Water is essential to maintain several life processes like photosynthesis, respiration, transpiration, etc.
• Water is a crucial component of all the metabolic activities in the body.
• Water helps in the digestion of food and its absorption in the blood.
• Water helps in maintaining body temperature.

Q.3. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?

Solution: Living organisms are dependent on the soil because of the following reasons:

• The plants are the producers of the ecosystem on which almost all the organisms depend for nutrition.
• They grow in the soil that provides them with mineral nutrients and water.
• Soil also supports the existence of forests, which provide us with wood, building materials, fibres, and medicinal plants. Forests are also a natural habitat for many animal species.
• Several insects and animals make their homes in the soil.
• The organisms that live in water are not independent of soil as a resource. The mineral nutrients are present in water in the dissolved form. But their recycling takes place with the help of decomposers that are present in the soil.
• Water bodies like rivers get a supply of minerals from the soil. Moreover, the minerals locked in rocks also can’t reach aquatic organisms till rocks are converted into soil.

Download NCERT Solutions for Class 9 Science Chapter 14

NCERT Solutions for Class 9 Science Chapter 14: Summary

As far as we know, our planet is the only place where life exists. For life to exist, there has to be ambient temperature, water, and energy. There are also factors that are critical to the existence of life, such as the distance of our planet from the sun and resources available on earth, such as the land, water, and air present on the earth’s outer crust.

The Earth’s outer crust is called the lithosphere, and about 75% of the lithosphere is covered by water. The lithosphere is covered by a blanket of air called the atmosphere. Water can also be found underground; this is called a hydrosphere. A place where all three layers of Earth, namely lithosphere, hydrosphere and atmosphere, exist is called Biosphere and here is where life exists.

Class 9 Science Natural Resources: Important Questions

Some of the important questions from CBSE Class 9 Science chapter 14 are as follows.

Natural Resources – Short Answer Questions

• What is the greenhouse effect?
• What is soil erosion?
• How can soil erosion be prevented?
• Mention some causes of water pollution.
• Define natural resources. Mention types of natural resources with examples.
• Distinguish between renewable and non-renewable resources.
• How can the fertility of soil be restored?
• Mention the constituents of soil.

Natural Resources – Long Answer Questions

• How is the wind created? 
• How is the soil formed?
• Describe the biotic and abiotic factors that cause soil formation.
• What are the hazards of air pollution?
• Why is water important for living organisms?

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