Which one of the following is a human made resources

Exercise : Solutions of Questions on Page Number : 6 Q1 : Answer the following questions. (i) Why are resources distributed unequally over the Earth? (ii) What is resource conservation? (iii) Why are human resources important? (iv) What is sustainable development? Answer : (i)The distribution of resources depends upon a number of physical factors like terrain, climate and altitude. Since these factors differ so much over the Earth, the distribution of resources is unequal. (ii)Using resources carefully and giving them time to get renewed is called resource conservation. (iii)People can make the best use of nature to create more resources when they have the knowledge, skill and technology to do so. This is why human beings are a special resource. It is the abilities of human beings which help in transferring a physical material into a valuable resource. Hence, human resources are important. (iv)Balancing the need to use resources and also conserving them for the future is called sustainable development. In other words, sustainable development means utilising resourcesin such a manner that not only are the present requirements met but also the needs of the future generations are taken care of. Q2 : Tick the correct answer. (i) Which one of the following does not make a substance a resource? (a) Utility (b) Value (c) Quantity (ii) Which one of the following is a human-made resource? (a) Medicines to treat cancer (b) Spring water (c) Tropical forests (iii) Biotic resources are...

The correct answer is Medicines to treat cancer. Key Points • Human Made Resources: • Sometimes, natural substances become resources only when their original form has been changed. • Iron ore was not a resource until people learned to extract iron from it. • People use natural resources to make buildings, bridges, roads, machinery, and vehicles, which are known as human-made resources. • Medicines to treat cancer are an example ofhuman-made resources. • Technology is also a human-made resource. Important Points • Natural resources: • Resources that are drawn from Nature and used without much modification are called natural resources. • The air we breathe, the water in our rivers and lakes, the soils, minerals, spring water, tropical forestsare all-natural resources. • Many of these resources are free gifts of nature and can be used directly. • In some cases, tools and technology may be needed to use a natural resource in the best possible way.

NCERT Solutions for Class 8 Social Science Geography Chapter 1 Resources These Solutions are part of 1. Answer the following questions. Question 1(1). Why are resources distributed unequally over the earth? Answer: The distribution of resources depends on various factors such as the physical nature of the place. The physical factors include terrain, climate, height above sea level, etc. Since these factors vary in different parts of the world, resources are pot distributed over the earth. Question 1(2). What is resource conservation? Answer: Using resources carefully and giving them time to get renewed is resource conservation. Question 1(3). Why are human resources important? Answer: Human resources are important because they have an intelligent mind which can make the best use of nature to create more resources. Had humans not been there, different substances would not have been resources. Their utility can only be realised by human beings. Question 1(4). What is sustainable development? Answer: Sustainable development is the careful utilisation of resources that help to meet the requirements of the present and also takes care of the development for future generations. Question 2. Tick the correct answer. 1. Which one of the following does NOT make the substance a resource? (a) utility (b) value (c) quantity. 2. Which one of the following is a human-made resource? (a) medicines to treat cancer (b) spring water (c) tropical forests 3. Complete the statement. Biotic resour...

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The correct option is D Medicines to treat cancer. The correct option is D. Explanation of correct option: • Medicines are disease specific, i.e. a manufactured drug is targeted against a specific disease. • Medicine is a man-made resource as it is made by human beings to cure diseases. • Examples - 5- fluorouracil, and 6-mercaptopurines are the medicines used to treat cancer. Explanation of incorrect options: Option A • The water cycle is a natural resource. • It is present naturally in the environment. Option B • Tropical forests are also a natural resource. • It exists naturally in the environment. Option C • An aquatic ecosystem is also a natural resource. • It exists naturally in the environment. Final answer: Medicine is a man-made resource.

Potential resources Actual resources 1.Potential resources are those whose entire quantity may not be known and these are not being used atpresent. 2.These resources could be used in the future. 3.Examples: uranium deposits in Ladakh. 1.Actual resources are those resources whose quantity is known. 2.These resources are being used in the present. 3.The rich deposits of coal in Ruhr region of Germany and petroleum in the West Asia, the dark soils of the Deccan plateau in Maharashtra are all actual resources. Ubiquitous resources Localised resources 1.A ubiquitous resource is one which is found all over the world. 2.Its presence is not governed by physical conditions. 3.Examples: air. 1.A localised resource is one which is found in a particular region or physical condition. 2.The presence of a localised resource is governed by physical conditions. 3.Examples: minerals.