Mix Examples - Sustainable Management of Natural Resources Questions in English

(A) Small check dams are constructed across flooded gullies to manage water resources effectively.
$(1)$ They hold water for a short duration,which allows it to percolate into the ground,thereby recharging the groundwater level.
$(2)$ By slowing down the flow of water,they prevent soil erosion caused by rapid runoff.
$(3)$ They do not hold water permanently,as they are designed to allow gradual seepage.
Therefore,statements $(ii)$ and $(iii)$ are correct.

(B) The three $R's$ that are essential for the sustainable management and conservation of natural resources are:
$1$. $Reduce$: This means using fewer natural resources by minimizing waste and consumption.
$2$. $Recycle$: This involves collecting waste materials like paper,plastic,glass,and metal and processing them into new products.
$3$. $Reuse$: This means using items again instead of throwing them away,which extends the life of the product and reduces the demand for new resources.
Therefore,the correct sequence is $Reduce, Recycle, Reuse$.

(C) The Arabari forest, located in the Midnapore district of West Bengal, is famous for the successful community-based forest management project initiated in the $1970$s. This forest is primarily dominated by $Sal$ $(Shorea \text{ robusta})$ trees. The local community was involved in the protection and management of these $Sal$ forests, which led to their significant regeneration.

(D) successful forest conservation strategy must be holistic.
Forests are complex ecosystems consisting of both biotic (living) and abiotic (physical) components.
Protecting only one group,such as herbivores or consumers,would disrupt the ecological balance and food web.
Therefore,a comprehensive approach that protects all physical components (like soil,water,and climate) and all biological components (flora and fauna at all trophic levels) is essential for the sustainability of the forest ecosystem.

(A) The 'Chipko Movement' originated in the early $1970$s in the Garhwal Himalayas.
It was a non-violent,grassroots movement where local villagers,particularly women,hugged trees to prevent them from being felled by contractors.
The movement highlighted the vital role of local communities in the protection and management of forest resources.
Therefore,the core message of the 'Chipko Movement' is the active involvement and participation of the community in forest conservation efforts.

(B) The $pH$ range of $3.5-4.5$ indicates that the river water is highly acidic.
Lead battery manufacturing factories typically use sulfuric acid $(H_2SO_4)$ in their production processes.
If the effluents from these factories are discharged into the river without proper treatment,the sulfuric acid significantly lowers the $pH$ of the water,making it acidic.
Soap and detergent factories often release alkaline substances,while plastic and alcohol industries do not typically release strong mineral acids as their primary effluent that would cause such a drastic drop in $pH$.

(C) Groundwater depletion is primarily caused by excessive extraction and reduced recharge rates.
$A$. Thermal power plants consume large amounts of water for cooling,contributing to depletion.
$B$. Loss of forest cover leads to reduced soil water retention and decreased rainfall,which lowers groundwater recharge.
$C$. Afforestation involves planting trees,which increases the soil's ability to retain water and promotes groundwater recharge,thereby preventing depletion.
$D$. Cropping of high water-demanding crops leads to over-extraction of groundwater for irrigation.
Therefore,afforestation is the correct answer as it helps in conserving and recharging groundwater.

(D) The construction of large dams faces opposition due to several factors:
$1$. Social reasons: Large dams often lead to the displacement of a large number of peasants and tribals without adequate compensation or rehabilitation.
$2$. Economic reasons: They involve the consumption of huge amounts of public money without the generation of proportionate benefits for the local population.
$3$. Environmental reasons: They cause massive deforestation,loss of biodiversity,and disruption of local ecosystems and water cycles.
Therefore,all the mentioned reasons contribute to the opposition against large dams.

(A) Khadins,Bundhis,Ahars,and Kattas are traditional,ancient methods used for water harvesting and water management in various parts of India.
These structures are designed to capture and store rainwater or surface runoff,which helps in recharging groundwater and providing water for irrigation and domestic use.
Therefore,they are classic examples of ancient water harvesting systems.

(B) Fossil fuels are natural resources formed from the remains of ancient plants and animals over millions of years,such as coal,petroleum,and natural gas.
$A$. Wind,ocean,and coal: Coal is a fossil fuel.
$B$. Wind,wood,and sun: None of these are fossil fuels. Wind and sun are renewable energy sources,and wood is a biomass fuel.
$C$. Kerosene,wind,and tide: Kerosene is a product derived from petroleum (a fossil fuel).
$D$. Petroleum,wood,and sun: Petroleum is a fossil fuel.
Therefore,the correct combination is wind,wood,and sun.

(D) An eco-friendly activity is one that does not harm the environment or contributes to sustainable development.
$A$. Using a car for transportation increases carbon emissions,which contributes to global warming.
$B$. Using polybags (plastic bags) is harmful because they are non-biodegradable and cause pollution.
$C$. Using chemical dyes for colouring clothes often leads to water pollution as these chemicals are released into water bodies.
$D$. Using windmills to generate power for irrigation is an eco-friendly activity because it utilizes renewable wind energy,which does not cause pollution or deplete natural resources.

(D) Sustainable development is defined as the development that meets the needs of the present generation without compromising the ability of future generations to meet their own needs.
Statement $(i)$ is correct because sustainable development emphasizes planned growth that minimizes environmental degradation.
Statement $(iv)$ is correct because it involves balancing the needs of all stakeholders,including the environment and society.
Statements $(ii)$ and $(iii)$ are incorrect because sustainable development does not ignore environmental damage,nor does it advocate for stopping all development; rather,it promotes a balance between development and conservation.

(A) The practice of clearing large areas of forest to cultivate only a single species of plant is known as $monoculture$.
This practice is detrimental to the environment because it reduces the diversity of species in the area,making the ecosystem less resilient to diseases and pests.
Unlike natural forests,which support a wide variety of flora and fauna,monoculture plantations lack $biodiversity$ and do not support the complex food webs found in natural ecosystems.

(B) natural resource is something that is found in nature and can be used by humans without significant modification.
$A$. Mango tree is a living organism found in nature.
$B$. $A$ wooden house is a man-made structure constructed using wood (which is a natural resource),but the house itself is not a natural resource.
$C$. $A$ snake is a living organism found in nature.
$D$. Wind is a natural phenomenon and a resource.
Therefore,the wooden house is not a natural resource.

(B) natural resource is defined as any material or substance that occurs naturally in the environment and is valuable to human beings for their survival,development,and economic activities. Examples include water,air,soil,minerals,and fossil fuels. Since these resources are provided by nature and are essential for human life,option $B$ is the most accurate definition.

(D) Coliform bacteria are a group of bacteria found in the human intestine.
Their presence in water indicates contamination by disease-causing microorganisms.
In the river Ganga,the disposal of unburnt corpses and human excreta into the water is the primary source of these bacteria.
Therefore,the disposal of unburnt corpses into water is the main cause for the abundant presence of coliform bacteria.

(A) The statement is $True$. Biodiversity refers to the variety of life forms in an ecosystem. $A$ high level of biodiversity ensures that an ecosystem is resilient and stable because different species perform various ecological functions. When diversity is lost,the ecosystem becomes less capable of recovering from disturbances,leading to a loss of ecological stability.

(B) The statement is False.
Non-judicious or excessive use of forest resources leads to deforestation,habitat destruction,and fragmentation.
This significantly reduces the availability of resources for wildlife,leading to a decline in species population and a loss of biodiversity.
Therefore,the impact of non-judicious use of forest resources on biodiversity is profound and negative,not little.

(A) Natural resources are finite and essential for the survival and development of human society.
To ensure that these resources are available for future generations while meeting our current economic and social needs,they must be managed and used with caution.
Sustainable management involves using resources in a way that minimizes waste and prevents environmental degradation,thereby supporting long-term growth and material aspirations.

(B) The statement is $False$. The environment is not just a collection of plants and animals; it is a complex system that includes both biotic (living) and abiotic (non-living) components. These components interact with each other in a dynamic equilibrium. The environment encompasses air,water,soil,sunlight,minerals,and all living organisms,along with the physical and chemical processes that sustain life on Earth.

(A) The statement is $True$. Economic and social development models directly influence how natural resources are utilized. If development prioritizes sustainability and ecological balance,the environment is conserved. Conversely,if development focuses solely on rapid industrialization without considering environmental impact,it leads to the destruction of natural resources and ecosystems.

(B) The statement is False. The Chipko Andolan (movement) originated in the Garhwal Himalayas in the early $1970$s,specifically in the Reni village of Chamoli district,Uttarakhand. The movement in Khejrali village,Rajasthan,which occurred in $1731$ to protect Khejri trees,was led by Amrita Devi Bishnoi and is historically distinct from the modern Chipko Andolan.

(B) The statement is $False$. Forests play a crucial role in maintaining the ecosystem.
$1$. Forests prevent soil erosion by binding the soil particles with their roots.
$2$. They help in water conservation by increasing the water-holding capacity of the soil and facilitating groundwater recharge.
$3$. Destruction of forests leads to increased soil erosion,loss of soil fertility,and depletion of water sources.

(A) The statement is $True$. Local communities have traditionally lived in and around forests and possess deep knowledge about the local ecosystem. Their involvement ensures that forest resources are used sustainably,prevents illegal logging,and promotes conservation efforts,as they rely on these forests for their livelihood and cultural needs. Examples like the $Chipko$ $Andolan$ demonstrate how local participation is crucial for forest protection.

(B) The $3R$ principle of sustainable development stands for Reduce,Reuse,and Recycle.
Reducing the consumption of non-renewable resources like $LPG$ (Liquefied Petroleum Gas) by switching to renewable sources like solar energy is a classic example of the 'Reduce' strategy.
By using solar energy,we decrease the demand and consumption of fossil fuels,thereby conserving them for the future.

(B) According to the State of Forest Report $(SFR)$ $2021$, the total forest cover in India is $713,789 \text{ sq km}$. However, in the context of older $NCERT$ textbooks and standard curriculum questions, the value $768,436 \text{ sq km}$ is often cited as the total forest and tree cover area. Based on the provided options, $768,436 \text{ sq km}$ is the intended correct answer.

(C) According to the State of Forest Report $(SFR)$ data often cited in educational contexts for Gujarat,the forest cover is approximately $9.69 \,\%$. Therefore,option $C$ is the correct answer.

(A) Amrita Devi Bishnoi sacrificed her life along with $363$ other people in the year $1731$ in Khejarli village,Rajasthan.
She led a protest against the cutting of $Khejri$ trees by the King's men,demonstrating an extraordinary commitment to environmental conservation.

(B) The $Red \ Data \ Book$ is a public document created for recording endangered and rare species of animals,plants,and fungi as well as some local subspecies that are present within a particular region or country.
It is maintained by the $International \ Union \ for \ Conservation \ of \ Nature \ (IUCN)$.
Therefore,the correct option is $B$.

(A) As of the latest data from the Wildlife Institute of India and the Ministry of Environment,Forest and Climate Change,there are $106$ National Parks in India.
These protected areas are established under the Wildlife Protection Act,$1972$,to conserve biodiversity and natural habitats.
Therefore,the correct answer is $106$.

(C) The $Sardar$ $Sarovar$ $Dam$ is a concrete gravity dam built on the $Narmada$ river in $Kevadiya$, near $Navagam$, in the state of $Gujarat$, $India$.
It is one of the largest water resource projects in $India$, providing water for irrigation and electricity generation to the states of $Gujarat$, $Madhya$ $Pradesh$, $Maharashtra$, and $Rajasthan$.

(C) Petroleum is often referred to as $ \text{'liquid gold'} $ because of its immense economic value and its role as a primary energy source for the global economy.
It is a complex mixture of hydrocarbons that, when refined, yields various products like petrol, diesel, kerosene, and lubricants, which are essential for transportation, industry, and power generation.

(D) natural resource is something that is found in nature and can be used by humans without significant modification.
Water,minerals,and forests are all naturally occurring resources.
Electricity is not a natural resource because it is a form of energy that must be generated or produced by humans through the conversion of other energy sources (such as coal,wind,solar,or water power).
Therefore,electricity is considered a man-made or secondary energy source.

(C) Natural resources are classified into two types: biological (biotic) and non-biological (abiotic).
Biological resources are those derived from living organisms,such as forests,wildlife,and microorganisms.
Non-biological resources are non-living components,such as soil,air,water,and minerals.
Therefore,forests are considered biological natural resources.

(B) Forests are considered one of the most rapidly depleting natural resources globally due to deforestation for agriculture,urbanization,industrialization,and infrastructure development. While water is also a critical resource facing scarcity,the rate of forest cover loss is globally recognized as a major environmental crisis impacting biodiversity and climate change.

(B) The process of collecting waste materials like paper,plastic,or metal,and processing them to create new products is known as $Recycle$.
In this case,converting used paper into pulp to manufacture new paper saves raw materials (like wood pulp) and energy,which is a classic example of $Recycle$.

(D) The concept of the $3R$s (Reduce,Reuse,Recycle) is essential for sustainable management of natural resources.
When a bottle is purchased for pickles,it is made of glass or plastic.
Instead of throwing it away after the pickles are finished,it can be cleaned and reused in the kitchen for storing other items like spices,pulses,or grains.
This practice of reusing items reduces waste and promotes sustainable living.

(D) The three $'R'$s to save the environment are $Reduce$,$Recycle$,and $Reuse$.
$1$. $Reduce$: This means using less of a resource,such as saving electricity by switching off unnecessary lights and fans.
$2$. $Recycle$: This involves collecting plastic,paper,glass,and metal items and recycling these materials to make required things instead of synthesizing or extracting fresh plastic,paper,glass,or metal.
$3$. $Reuse$: This is a better strategy than recycling because it does not use energy. It involves using things again and again,such as using old envelopes for writing or using plastic bottles for storing water.

(D) Recycling is the process of converting waste materials into new materials and objects.
$A$,$B$,and $C$ involve processing waste materials (plastic,paper,and metal) to create new products,which is the definition of recycling.
$D$ (using a pressure cooker to cook food) is an example of energy conservation or efficient resource use,not recycling. Therefore,it is the correct answer.

(B) Renewable resources are those that can be replenished naturally over a short period of time. $Wind$, $Wildlife$, and $Water$ are considered renewable resources. $Coal$ is a fossil fuel formed over millions of years through the decomposition of organic matter under high pressure and temperature. Because its formation rate is extremely slow compared to its consumption rate, it is classified as a non-renewable resource.

(C) Forests and wildlife are living components of the environment,which classifies them as $Biotic$ resources.
They have the capacity to reproduce and regenerate over time,making them $Renewable$ resources,provided they are managed sustainably and not over-exploited.
Therefore,forests and wildlife are $Biotic$ and $Renewable$ natural resources.

(A) Deforestation refers to the large-scale removal of trees and forest cover.
Trees play a crucial role in the water cycle through the process of transpiration,where they release water vapor into the atmosphere.
This water vapor contributes to cloud formation and subsequent rainfall.
Therefore,a significant reduction in forest cover leads to a decrease in the amount of water vapor released into the atmosphere,which ultimately results in decreased rainfall.
Conversely,deforestation increases soil erosion,increases global temperature due to the greenhouse effect,and increases atmospheric $CO_2$ levels.

(C) According to the State of Forest Report $(SFR)$,the recorded forest area in the state of Gujarat is approximately $18999 \ km^2$. This data is often cited in environmental studies regarding the conservation of natural resources in India.

(A) According to the National Forest Policy of India,the ideal forest cover should be $33\%$ of the total land area. However,as per the data provided in the $NCERT$ textbook for Class $10$ (Chapter: Sustainable Management of Natural Resources),the forest cover in India is approximately $23.38\%$ of the total geographical area. Therefore,option $A$ is the correct answer.

(C) The rapid decline of forest cover across the world is primarily driven by human activities.
$1$. Population growth leads to an increased demand for land for housing,agriculture,and infrastructure.
$2$. Urbanization involves the expansion of cities into forested areas,leading to deforestation.
$3$. Industrialization requires vast amounts of raw materials and space,often resulting in the clearing of large forest tracts.
Therefore,population growth,urbanization,and industrialization are the primary anthropogenic factors causing the rapid loss of forest cover.

(B) Deforestation has the most severe and immediate impact on the tropical regions.
Tropical rainforests are biodiversity hotspots that play a critical role in global carbon sequestration and climate regulation.
When these forests are cleared,it leads to rapid soil erosion,loss of habitat for a vast number of species,and significant disruption to the water cycle,which has global environmental consequences.

(D) Deforestation refers to the large-scale removal of trees and forests.
$1$. It leads to a decrease in rainfall because trees contribute to the water cycle through transpiration.
$2$. It causes an increase in soil erosion as tree roots hold the soil together.
$3$. It leads to an increase in atmospheric $CO_2$ levels because trees act as carbon sinks,and their removal releases stored carbon.
$4$. Population growth is a cause of deforestation,not an effect of it. Therefore,the correct answer is $D$.

(C) The greenhouse effect is a natural process that warms the Earth's surface.
When the Sun's energy reaches the Earth's atmosphere,some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
$CO_2$ (Carbon dioxide) is the primary greenhouse gas contributing to global warming.
An increase in the concentration of $CO_2$ due to human activities like burning fossil fuels and deforestation traps more heat in the atmosphere,leading to an enhanced greenhouse effect.

(B) The $Eucalyptus$ tree is widely known for its exceptionally rapid growth rate compared to many other tree species. It is often planted in forestry for quick timber production and pulpwood. While other trees like $Semal$,$Khejri$,and $Teak$ are important,they generally have a slower growth cycle than $Eucalyptus$.

(B) Among the given options, $A$, $C$, and $D$ (Silk Cotton, Gulmohar, and Eucalyptus) are known for their relatively rapid growth rates in suitable environments. $B$ (Golden Shower or Amaltas, scientifically known as $Cassia \text{ fistula}$) is a slow-growing tree compared to the others. Therefore, it is not considered a fast-growing tree.