Mix Examples - Sustainable Management of Natural Resources Questions in English

$(A)$ natural resource is something that is found in nature and can be used by humans without significant modification.
$Water$, $Soil$, and $Air$ are all naturally occurring substances essential for life and are classified as natural resources.
$Electricity$, on the other hand, is a form of energy that is generated by humans through various processes (such as burning fossil fuels, hydroelectric power, or solar panels). Therefore, it is not a natural resource but a man-made product of energy conversion.

(B) Forests are considered the most rapidly dwindling natural resource in the world due to large-scale deforestation for industrialization,urbanization,agriculture,and infrastructure development.
While water is a critical resource,forests are being cleared at an alarming rate,leading to a loss of biodiversity,soil erosion,and climate change,which makes them the most rapidly depleting resource among the given options.

(C) natural resource is defined as any material or substance that occurs in nature and can be used for economic gain or to sustain life.
These resources are provided by the Earth and are not created by human activity.
Examples include air,water,soil,minerals,plants,and animals.
Therefore,the most appropriate definition is that it is a gift of nature which is very useful to mankind.

(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 case of the river Ganga,the disposal of unburnt corpses into the water is a major source of organic pollution,which leads to the proliferation of coliform bacteria.
While other activities like washing clothes or immersion of ashes contribute to pollution,the decomposition of organic matter from corpses provides a significant nutrient source for these bacteria.

(A) The $pH$ range of $3.5 - 4.5$ indicates that the 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 acidic waste significantly lowers the $pH$ of the water.
Soap and detergent factories usually produce alkaline effluents.
Plastic cup manufacturing and alcohol distilleries do not typically discharge strong mineral acids as their primary waste product compared to battery manufacturing.
Therefore,the lead battery manufacturing factory is the most likely cause for the acidic pollution.

(B) Most freshwater organisms,including plants and animals,thrive in a $pH$ range that is near neutral.
This range is typically between $6.5$ and $7.5$.
If the $pH$ drops below $5.5$ (acidic) or rises significantly above $8.5$ (alkaline),it can be harmful or fatal to many aquatic species.
Therefore,the optimal $pH$ range for the survival of freshwater life is $6.5 - 7.5$.

(C) The three $R$'s that help in the conservation of natural resources are:
$1$. $Reduce$: This means using fewer resources,such as turning off lights and fans when not in use to save electricity,or repairing leaking taps to save water.
$2$. $Recycle$: This involves collecting waste materials like paper,plastic,glass,and metal,and processing them to create new products instead of extracting raw materials.
$3$. $Reuse$: This is a better strategy than recycling as it involves using an item again for the same or a different purpose,such as using empty glass jars for storing pickles or other items.

(D) Biodiversity is defined as the variety of all life forms,including plants (flora),animals (fauna),and microorganisms,present in a specific ecosystem or area.
Statement $(i)$ is correct because biodiversity encompasses the variety of both flora and fauna.
Statement $(ii)$ is incorrect because biodiversity is not limited to flora alone.
Statement $(iii)$ is correct because forests typically support a wide range of diverse species compared to other habitats,leading to higher biodiversity.
Statement $(iv)$ is incorrect because biodiversity refers to the variety of species,not just the population count of a single species.
Therefore,statements $(i)$ and $(iii)$ correctly describe the concept of biodiversity.

(A) Sustainable development is a pattern of resource use that aims to meet human needs while preserving the environment so that these needs can be met not only in the present but also for future generations.
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 various stakeholders,ensuring that development is socially equitable and environmentally responsible.
Statement $(ii)$ is incorrect because sustainable development specifically considers environmental impact.
Statement $(iii)$ is incorrect because sustainable development does not mean stopping all progress,but rather managing it responsibly.
Therefore,the correct statements are $(i)$ and $(iv)$.

(B) The practice of clearing large areas of forest to cultivate a single species of plant is known as $monoculture$.
This practice is detrimental to the environment because it reduces the diversity of organisms in the area,making the ecosystem less stable and more susceptible to pests and diseases.
Therefore,the correct option is $B$.

(C) successful forest conservation strategy must be holistic.
Forests are complex ecosystems consisting of both biotic (plants,animals,microorganisms) and abiotic (soil,water,air,climate) components.
Protecting only one group,such as herbivores or top predators,is insufficient because the survival of these species depends on the health of the entire ecosystem,including the physical environment.
Therefore,a comprehensive programme that protects all physical and biological components is essential for the long-term sustainability of the forest.

(D) The 'Chipko Movement' originated in the $1970s$ in the Reni village of 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 importance of involving the community in forest conservation efforts.

(A) Raising the height of dams leads to a larger reservoir area,which results in several negative environmental and social impacts:
$(i)$ The increased water level submerges vast areas of land,leading to the complete destruction of the local terrestrial flora and fauna.
$(ii)$ The submergence forces the displacement (dislocation) of human populations and their domestic animals from their homes and habitats.
$(iii)$ Large tracts of fertile agricultural land are submerged and permanently lost to the reservoir.
$(iv)$ While dam construction might provide temporary employment,it does not guarantee permanent employment for the displaced population,and the environmental/social costs far outweigh such claims. Therefore,$(i), (ii)$ and $(iii)$ are the correct consequences.

(B) The abbreviation $GAP$ stands for $Ganga$ $Action$ $Plan$.
It was a major initiative launched by the Government of India in $1985$ to reduce the pollution load on the river $Ganga$ and to improve its water quality.

(C) Sustainable development is a process of development that meets the needs of the current generation without compromising the ability of future generations to meet their own needs.
It involves the judicious use of natural resources and requires the active participation and consideration of all stakeholders,including local communities,industries,and governments.
Therefore,the statement that 'Sustainable development does not consider the view points of stakeholders' is incorrect because stakeholder engagement is a fundamental pillar of sustainable development.

(D) natural resource is something that is found in nature and can be used by humans without significant modification.
$A$,$B$,and $C$ (Mango tree,Snake,and Wind) are all components of the natural environment.
$D$ (Wooden house) is a man-made structure constructed using wood,which is a processed material derived from trees. Therefore,a wooden house is not a natural resource.

(A) Forests play a crucial role in maintaining the ecosystem.
$1$. Forests help in soil conservation by preventing soil erosion through the root systems of trees,which bind the soil particles together.
$2$. Forests are known for their high biodiversity,including a wide variety of plant species.
$3$. Forests provide numerous products such as timber,medicinal plants,fruits,and resins.
$4$. Forests act as sponges,absorbing rainwater and helping in groundwater recharge,thus conserving water.
Therefore,the statement 'Forests do not conserve soil' is incorrect.

(B) The Arabari forest range in the Midnapore district of West Bengal is famous for its successful community-based forest management project.
In $1972$, the forest department realized that the degradation of the Arabari forest was due to the alienation of the local people.
Under the leadership of $A$.$K$. Banerjee, the local villagers were involved in the protection and management of $1,272$ hectares of badly degraded $Sal$ forests.
In return for their help in protecting the forest, the villagers were given employment in silviculture and harvesting operations and allowed to collect firewood and fodder at nominal rates.
Therefore, the Arabari forests are dominated by $Sal$ trees.

(C) Ground water depletion is primarily caused by excessive extraction and reduced recharge of aquifers.
$A$. Loss of forest cover reduces the ability of the soil to absorb rainwater,leading to surface runoff rather than infiltration,which depletes ground water.
$B$. Thermal power plants consume large quantities of water for cooling purposes,contributing to depletion.
$C$. Afforestation involves planting trees,which helps in soil conservation and increases the water-holding capacity of the soil,thereby promoting ground water recharge and preventing depletion.
$D$. Cropping of high water-demanding crops (like sugarcane or rice) requires excessive irrigation,which leads to the over-extraction of ground water.
Therefore,afforestation is the correct answer as it helps in maintaining the ground water level.

(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 huge amounts of public money and often do not generate proportionate benefits for the local population.
$3$. Environmental reasons: They cause massive deforestation,loss of biodiversity,and ecological imbalance in the surrounding areas.
Therefore,all the mentioned factors contribute to the opposition.

(A) Khadins,Bundhis,Ahars,and Kattas are traditional,ancient methods used for water harvesting and management in various parts of India.
These structures were designed to collect 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 and ocean are renewable,but coal is a fossil fuel.
$B$. Wind,wood,and sun are not fossil fuels. Wood is a biomass resource,while wind and sun are renewable energy sources.
$C$. Kerosene is a product derived from petroleum (a fossil fuel).
$D$. Petroleum is a fossil fuel.
Therefore,the correct combination containing no fossil fuel is wind,wood,and sun.

(C) 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 as they are non-biodegradable and cause pollution.
$C$. Using windmills to generate power for irrigation is an eco-friendly activity because it utilizes renewable energy (wind energy) and does not produce harmful emissions.
$D$. Using chemical dyes for coloring clothes often leads to water pollution due to the discharge of toxic effluents into water bodies.
Therefore,the correct option is $C$.

(D) Small check dams are constructed across flooded gullies to manage water resources effectively.
$(i)$ While they may provide some water for irrigation,it is not their primary purpose.
$(ii)$ They hold water for a short period,which helps in reducing the flow velocity of water,thereby preventing soil erosion.
$(iii)$ By holding water,they allow it to percolate into the soil,which helps in recharging the groundwater levels.
$(iv)$ They do not hold water permanently; they are designed to hold water temporarily to facilitate infiltration.
Therefore,statements $(ii)$ and $(iii)$ are correct.

(C) list of items used daily in school includes: Paper,rexin bag,blade,pen,plastic box,scale,eraser,metallic compass,steel lunch box,and steel spoon.
Among these,the items that can be recycled are: Paper,blade,plastic box,eraser,metallic compass,steel lunch box,and steel spoon.

(N/A) The advantages of water harvesting at the community level include:
$(a)$ It leads to an increase in the groundwater level due to the recharging of wells and aquifers.
$(b)$ Stored groundwater keeps the soil layers above it moist,which supports vegetation and prevents water loss through evaporation.
$(c)$ It allows for the storage of water during the rainy season,which can be utilized during periods of scarcity or when required.

(N/A) The excessive use of fertilisers in the fields led to the runoff of nutrients into the lake during rains.
These fertilisers are rich in phosphates and nitrates,which act as nutrients for aquatic plants,leading to their rapid and excessive growth,a process known as $Eutrophication$.
As the surface of the water became completely covered with these plants,it blocked sunlight from reaching deeper layers.
Furthermore,the decomposition of these plants by microorganisms consumed a large amount of dissolved oxygen,leading to its depletion.
This lack of dissolved oxygen and the change in the ecosystem resulted in the mass death of fish.

(N/A) To conserve electricity in your house,the following measures can be taken:
$(a)$ Switch off fans,lights,and other electrical appliances when they are not in use.
$(b)$ Maximize the use of natural sunlight during the day to reduce the need for artificial lighting.
$(c)$ Use solar water heating systems,especially during winters,to reduce reliance on electric geysers.
$(d)$ Replace incandescent bulbs with energy-efficient alternatives like $CFL$s (Compact Fluorescent Lamps) or $LED$s (Light Emitting Diodes) to consume less power.

(N/A) Both coal and petroleum are fossil fuels that take millions of years to form from the remains of ancient biomass. Because the rate at which we are consuming these resources is significantly faster than the rate at which they are being naturally replenished,they are non-renewable and will be exhausted in the near future. Therefore,it is essential to conserve them.

(N/A) To control the levels of carbon dioxide $(CO_2)$ in the atmosphere,the following measures can be adopted:
$(a)$ Reduce the consumption of fossil fuels like petrol and diesel in automobiles to lower emissions.
$(b)$ Use cleaner fuels such as $CNG$ (Compressed Natural Gas) or electric vehicles to minimize carbon output.
$(c)$ Instead of burning organic waste or litter,convert it into manure through composting.
$(d)$ Implement industrial smoke treatment processes,such as scrubbers,to remove harmful gases before they are discharged into the atmosphere.
$(e)$ Increase forest cover by planting more trees,as they act as carbon sinks by absorbing $CO_2$ during photosynthesis.

(N/A) The water reservoir in Figure $(a)$ is a surface water body (pond/lake),and in Figure $(b)$,it is an underground water body (aquifer).
$(b)$ Figure $(b)$ has an advantage over Figure $(a)$. The advantages of storing water underground are:
$1$. It does not evaporate.
$2$. It spreads out to recharge wells and provides moisture for vegetation over a wide area.
$3$. It is protected from contamination by human and animal wastes.
$4$. It prevents the breeding of insects like mosquitoes.

(N/A) $Reduce$ means to use a material or commodity in a lesser quantity,for example,electricity and water.
$Recycle$ means collecting a material that has been used once and sending it back to a manufacturer so that they can make other useful materials from it,for example,plastic bottles and paper.
$Reuse$ means using an item over and over again instead of throwing it away. It does not involve the process of recycling on either a small or large scale,for example,used envelopes and glass jars.

(N/A) Here are five daily activities to conserve natural resources and minimize energy usage:
$(a)$ Use leftover water from your water bottle to water indoor plants instead of pouring it away.
$(b)$ Ensure all water taps are tightly closed before going to sleep to prevent water wastage.
$(c)$ Use a bucket and mug for watering plants or cleaning instead of a hose pipe to save water.
$(d)$ Wash vehicles only when necessary and use a bucket of water rather than a running hose.
$(e)$ Switch off fans and lights when leaving a room to minimize electricity consumption.
$(f)$ Utilize solar water heaters to reduce the demand for electricity or gas.
$(g)$ Replace conventional incandescent bulbs with energy-efficient $LED$ or $CFL$ lamps.

(N/A) Yes,water conservation is necessary. Although the total amount of fresh water on Earth is theoretically sufficient to meet human needs,it is not readily available for use due to several factors:
$1$. Uneven distribution of water resources across different geographical regions.
$2$. Significant seasonal and annual fluctuations in rainfall patterns,leading to droughts in some areas.
$3$. Excessive wastage,pollution,and mismanagement of water resources.
$4$. Increasing demand due to population growth,industrialization,and agricultural expansion.
Therefore,conservation is essential to ensure a sustainable supply for future generations.

(N/A) Waste water can be utilized in the following ways:
$(a)$ Recharging the groundwater table to prevent depletion.
$(b)$ Using treated waste water for irrigation in agriculture.
$(c)$ Using treated municipal waste water for non-potable purposes such as washing cars,cleaning roads,and watering gardens.
$(d)$ Utilizing organic pollutants present in sewage water as fertilizers for specific crops after proper treatment.

(N/A) Forests are renewable resources that provide the following benefits:
$(a)$ Habitat,food,and protection to wildlife.
$(b)$ Help in balancing $CO_2$ and $O_2$ levels in the atmosphere.
$(c)$ Improve the water-holding capacity of the soil.
$(d)$ Regulate the water cycle.
$(e)$ For human beings,they are a source of essential commodities like fuel wood,timber,pulp,paper,etc.
$(f)$ They provide useful products such as fruits,resins,gums,essential oils,and bidi wrappers.

(N/A) The forest department developed a strategy in which the villagers were involved in the protection of the forest. In return for their labour,the villagers were paid and also received benefits from harvesting operations. They were allowed to collect wood and fodder upon payment of a nominal fee. In this way,through the active and willing participation of the local people,the $Sal$ forests of Arabari were successfully conserved.

(N/A) Coliform bacteria are a group of bacteria that are primarily found in the intestines of humans and other warm-blooded animals. Their presence in water is often used as an indicator of fecal contamination.

(N/A) The two ancient water harvesting structures in Maharashtra are $Bandharas$ and $Tals$. These are traditional methods used for water conservation and irrigation.

(B) Forests serve as the natural habitat for a vast array of wildlife species,including both plants and animals,many of which are endemic to these regions. By preserving these ecosystems,forests play a critical role in maintaining the balance of biodiversity and protecting the environment from degradation.

(N/A) Ideal methods:
$(i)$ Recycling the wastes.
$(ii)$ Reuse after repairing if required.
$(b)$ Traditional methods:
$(i)$ Throwing them in the dustbin and dumping in sanitary landfills.
$(ii)$ Burning or disposing of them in water bodies or rivers.

(N/A) Loss of vegetation cover,which reduces the rate of water percolation into the soil.
$(b)$ Diversion of water towards high water-demanding crops,leading to over-extraction.
$(c)$ Pumping out excessive water for irrigation and industrial purposes,which exceeds the natural recharge rate.

(N/A) Two examples of wastes that can be recycled and reused are:
$1$. Old newspapers (paper waste).
$2$. Plastic items (plastic waste).
Other examples include glass and metal scraps.

(N/A) Due to the excessive use of natural resources, they are depleting at a faster rate and facing the danger of complete exhaustion.
$(b)$ Excessive use of natural resources has created a problem of environmental pollution and has threatened the life of humans.

(N/A) Our energy resources are finite and non-renewable. With the rapid increase in human population and industrialization,the demand for energy is growing at an exponential rate. To ensure long-term sustainability,reduce environmental pollution,and prevent the exhaustion of conventional fossil fuels,we need to shift towards alternative sources of energy.

(N/A) The management of natural resources should ensure the equitable distribution of resources so that all individuals,rather than just a handful of wealthy and powerful people,can benefit from the development and utilization of these resources. This approach promotes social justice and prevents the exploitation of resources by a privileged few.

(N/A) The group of bacteria whose presence confirms the contamination of river water is known as $Coliform$ bacteria. These bacteria are commonly found in the human intestine and their presence in water indicates contamination by sewage or fecal matter.

(N/A) The Government of India launched the $GAP$ ($Ganga$ $Action$ $Plan$) in $1985$. The primary objective of this multi-crore project was to improve the water quality of the river Ganga by intercepting,diverting,and treating domestic sewage and preventing toxic and industrial chemical wastes from entering the river.

(N/A) An affluent lifestyle often leads to the excessive consumption of natural resources,which results in the generation of large amounts of waste and contributes significantly to environmental pollution.

(N/A) Two items that can be easily recycled but are commonly thrown in dustbins include:
$1$. $Paper$ (e.g., newspapers, notebooks, cardboard).
$2$. $Plastic$ (e.g., soft drink bottles, polythene bags).
These materials can be processed and reused to manufacture new products, thereby reducing waste and conserving natural resources.