Explore topic-wise InterviewSolutions in .

1. Biotic

2. certain

3. people

4. resource

5. Abiotic

Earth has different topography, climate and altitude at different places. Difference in these factors has resulted in unequal distribution of resources over the earth.

Saving resources for the future generations is called conservation.

Making a balance between our need and conservation of resources is called sustainable development.

1. Ambergris belongs to international resources. 

2. It is an extract from the sperm whale.

3. A pound (0.454 kg) of sweet-smelling ambergris is worth US$ 63,000. It is used in perfume industries.

 Human resources make it possible to extract value from all other resources. Hence, human resources are important.

1. Resource planning is a technique or skill of proper utilisation of resources.

2. Resource planning in necessary became

(a) Resources are limited, their planning is necessary to use them properly and saving them for the future generation.

(b) Resources are unevenly distributed over different parts of the world.

(c) Resources should be protected from overexploitation

Sustainable development can take place when,

1. The reasons of depletion are identified.

2. Wastage and excess consumption is prevented.

3. Reusable resources are recycled.

4. Pollution is prevented.

5. Environment is protected.

6. Natural vegetation and wild life are preserved.

7. Alternative resources are used.

8. The easiest way to conserve resources is to follow the ‘3R’s, Reduce, Reuse, Recycle

To get food resources, agriculture is the most important source as it provides 85% of food resources.

Technology helps to develop the means of production. It increases the value of natural resources. Technology depends upon the human skill and technical knowledge. Mechanism helps in the better utilisation of natural resources. A resource is no resource until it is used.

1. Penguins: They are found in Antarctica, South Africa, Australia. Penguins are not generally fans of hot weather.

2. A Lion Asiatic Lions live in India’s Gir Forest. African lions live in Central and Southern Africa. 

3. Tigers originate from the Asian continent especially in Thailand, Indonesia, Laos, China, Malaysia, Russia, Nepal, Myanmar. There are Chinese and Bengal tigers.

4. Elephants are found in Africa as well as Asia. African elephants have the ears shaped like the African continent, where Asian elephants have smaller ears.

5. Most Kangaroos have their habitat in Australia. Gray Kangaroos, Antilopine Kangaroo, Tree Kangaroos are some types of Kangaroo family.

Man-made resources:

1. Natural resources are modified or processed by technology.

2. All structures built by man Human

Resources:

1. Groups of individuals use nature to create more resources

2. Education, Health, Knowledge and Skill have made this

(b) Only conclusion 2 follows

The knowledge, ideas, inventions and discoveries by people leads to creation of more resources. The discovery of fire led to idea of cooking and other related processes. Invention of wheels led to changes in modes of transport.

(a) Only conclusion 1 follows

On the basis of origin, resources may be divided into two types.

They are: 

1. Biotic resources 

2. Abiotic resources 

1. Biotic resources: Biotic resources are found in the biosphere which are obtained from living and organic materials. It includes forests, crops, birds, animals, fishes, man and materials that can be obtained from them. Fossil fuels such as coal and petroleum are also included in this category because they are formed from decayed organic matter.

2. Abiotic resources: Abiotic resources are the non-living parts of an environment. Examples of abiotic resources include land, water, air, sunlight and heavy metals including ores such as gold, iron, copper, silver etc.

Non-renewable resources can be divided into three types.

They are:

• Metallic resources
• Non – Metallic resources
• Fossil fuel resources

Fossil fuel resources: 

1. Fossil fuel resources are normally formed from the remains of dead plants and animals.

2. They are often referred to as fossil fuels and are formed from hydrocarbon.

Coal:

1. This is the most abundantly found fossil fuel that forms when dead plant matter is converted into peat.

2. It is used as a domestic fuel, in industries such as iron and steel, steam engines to generate electricity.

Petroleum:

1. Petroleum is found between the layers of rocks and is drilled from oil fields located in Offshore and coastal areas.

2. Petroleum and its derivatives are called Black Gold as they are very valuable.

Natural gas:

1. Natural gas is found with petroleum deposits and is released when crude oil is brought to the surface. 

2. It can be used as a domestic and industrial fuel.

Solar energy :

1. The sun produces energy in the form of heat and light. Solar energy is not harmful to the environment.

2. Photovoltaic devices or solar cells, directly convert solar energy into electricity.

3. India, China, Japan, Italy and States of America are major utilizers of solar energy in the world. 

Hydropower: 

1. Hydroelectricity power is the cheapest and most versatile source of energy out of all the know energy. Hydroelectric power is a renewable resource. 

2. China, Canada, Brazil, United States of America, Russia, India, Norway and Japan are some countries producing hydroelectricity. China is the largest producer of hydro-electricity.

Wind energy :

1. Wind power is clean energy since wind turbines does not produce any emission.

2. In recent years, wind energy has become one of the most economical and renewable energy technologies. 

3. Major wind energy producing countries are United States, China, Germany, Spain, India, United Kingdom, Canada and Brazil.

Resources are the elements of Bio-physical environment. But these become resources only when humans preserve these. Coal was always there, but it became a resource only when man used it as a source of energy. So it has been rightly said that the resources are not, they become so. Man uses technology and skill to develop resources. Machines and tools are used. Japan is a very good example where in spite of non existence of resources, the country has progressed to a great extent.

The big water bodies are called seas. Seas provide us organic minerals and power resources, fish, pearls, diamonds, etc. At some places, petroleum is also obtained from sea.

d) Both 1 and 2 follow.

Coal and petroleum are formed by organic and living plants and animals. So these are grouped as biotic resources.

(a) Thermal Power

Coal is classified into four types based on carbon content.

They are : 

1. Anthracite 

2. Bituminous 

3. Lignite

4. Peat

Natural resources can be classified into different groups depending on origin, development, renewability, distribution, ownership etc.

(a) On the basis of orgin:

On the basis of origin, resources can be classified into biotic and abiotic resources.

1. All living resources are biotic resources. Plants, animals and other micro organisms are biotic resources.

2. Abiotic resources are non-living things. Land, water, air and minerals are abiotic resources.

(b) On the basis of development:

Based on the level of development, resources can be divided into actual and potential resources. 

1. Actual resources are resources that are being used and the quantity available is known, (e.g.) Coal mining at Neyveli.

2. Potential resources are resources that are not being used in the present and its quantity and location are not known, (e.g.) Wind Energy.

(c) On the basis of distribution:

On the basis of distribution resources can be classified into localised resources and universal resources.

1. When resources are present in specific regions, they are called localised resources (eg.) Minerals.

2. Some resources are present everywhere. Such resources are called universal

Before the invention of coal, petroleum, and aeroplane, man was not aware of the Aluminium. Due to utility of Aluminium, its use increased. So we can say that proper use has led to the development of resources.

Correct option is (b) windmills

Correct option is (c) Aesthetic Value

We can conserve resources by reducing consumption, recycling and reusing things.

Land use depends upon relief, slope, soils, drainage and human needs.

1. Resource is anything that fulfills human needs. When anything is of some use it becomes valuable. All resources have value.

2. The value can be either commercial or non-commercial

1. Actual resources are resources that are being used and the quantity available is known.

2. Example: Coal at Neyveli.

Resources whose quantity is known and which are being used at present are called actual resources. On the other hand, resources whose quantity is not known and which are not being used at present are called potential resources.

Ubiquitous resources are available everywhere, while localized resources are available at select locations.

It is our duty to ensure that:

• The diversity of life on the earth is conserved.
• All uses of renewable resources are sustainable.
• The damage to natural environment system is minimised.

1. e 

2. d 

3. a 

4. b 

5. c

(d) A is correct but R is incorrect

1. Natural resources satisfy daily needs of man such as food, clothing and shelter.

2. Natural resources also contribute immensely to boost up a nation’s economy.

(1) 1. Natural resources which are limited can be called non-renewable resources.

2. They become exhausted after use and the time they take to replaces does not match the life cycle.

(2) 1. Resources which can be utilized by all the members of the community are called community – owned

2. resources.

Example: Public parks

(3)1. The transforming of raw materials into finished goods is called Secondary Activities.

2. Man’s skills and ideas are the basic requirements for these activities.

The following is the importance of Land and Soil :

Soil: Man grows crops on soils. It provides food and other raw materials to man. Fertile soils support dense population.

Land: Land is the basis of human activities. It helps in agriculture, setting up of industries, means of transportation, sports, tourism, etc. Houses are built on land.

The loose and unconsolidated material which forms the upper layer of the crust is called soil. Soil is formed by the breaking of parent rock.

All the useful elements of the environment which satisfy human needs are called resources. Resources are called ‘Gifts of nature’ such as rocks, minerals, soil, rivers, plants, and animals. These are valuable for mankind. Man’s surroundings provide him with resources.

The three categories of resources are :

1. Natural Resources
2. Human Resources
3. Human Made Resources

Forests, minerals, soil, and solar energy are natural resources. These make our environment or surroundings. These natural surroundings provide rsesources.

The population of India is lesser than only one country is China.

The wealth of a country is measured by its resources. The more developed resources make a country richer.