Conservation of Natural Resources Questions in English

(D) Urban forestry refers to the management and cultivation of trees in urban areas for their aesthetic,environmental,and social benefits.
This programme is specifically designed to improve the quality of life in towns and cities by increasing green cover.
Therefore,the correct option is $D$.

(D) The Great Fisher Bank is a large area of the North Sea,located off the coast of Great Britain. It is one of the most important fishing grounds in the world due to the mixing of warm and cold ocean currents,which creates ideal conditions for the growth of plankton,the primary food source for fish.

(B) is the correct answer.
Non-renewable resources are those natural resources that cannot be replenished or regenerated once they are consumed,as their formation takes millions of years.
Fossil fuels such as coal,oil (petroleum),and natural gas are organic in origin,derived from the remains of ancient plants and animals,and are considered non-renewable because they are depleted faster than they can be naturally replaced.

(C) Hydel-power plants generate electricity using the kinetic energy of flowing water.
Since water is a natural resource that is continuously replenished by the water cycle,it is considered a renewable source of energy.
Furthermore,the process of generating electricity from water does not involve the combustion of fossil fuels or the release of harmful greenhouse gases,making it a non-polluting source of energy.

(D) The correct answer is $D$.
Wind energy,solar energy,and tidal energy are all examples of renewable sources of energy.
These sources do not emit greenhouse gases or pollutants during the generation of electricity,making them non-polluting.
Therefore,all the options provided are correct.

(B) The correct answer is $B$. Products of oceans,such as tidal energy or wave energy,are considered inexhaustible because they are driven by natural phenomena like gravitational forces of the moon and sun or wind patterns. However,their practical utilization is limited by geographical constraints,technological feasibility,and economic costs. Fossil fuels are exhaustible,and nuclear fuels are finite resources.

(D) depleting source of energy is one that is non-renewable and will eventually run out after continuous use.
Fossil fuels,such as coal,petroleum,and natural gas,are formed over millions of years and are being consumed at a rate much faster than they can be replenished.
In contrast,water,wind,and sunlight are renewable sources of energy that are naturally replenished and will not run out in the foreseeable future.
Therefore,fossil fuel is the correct answer.

(C) William Vogt is widely recognized as a pioneer in the field of resource conservation. His influential book, '$Road \ to \ Survival$', published in $1948$, highlighted the dangers of overpopulation and the depletion of natural resources, significantly shaping the modern environmental movement.

(C) Afforestation refers to the process of planting trees and establishing forests in an area.
The roots of trees and plants bind the soil particles together,which increases the soil's resistance to being washed away by water or blown away by wind.
Therefore,afforestation is an effective method to prevent soil erosion.

(A) The Silent Valley in Kerala is a tropical evergreen forest that has been declared a National Park. It is preserved primarily because it is home to a unique and highly diverse ecosystem containing many rare and endangered species of plants and animals that are not found elsewhere.

(B) Forest conservation involves the protection and management of forest resources to ensure their sustainability.
$A$. Economy in lumbering refers to efficient and sustainable wood harvesting,which supports conservation.
$B$. Clear felling is the practice of removing all trees from a specific area,which leads to deforestation,soil erosion,and loss of biodiversity. This is an anti-forest conservation activity.
$C$. Preservation of forests is a direct conservation activity.
$D$. Preservation of wild animals is essential for maintaining the ecological balance of forest ecosystems,thus supporting conservation.

(B) non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption.
Coal deposits are formed over millions of years through the geological process of carbonization of organic matter.
Once consumed,they cannot be replenished within a human timescale,making them non-renewable.
In contrast,forests,water,and wildlife are considered renewable resources as they can be replenished through natural cycles,provided they are managed sustainably.

(B) The 'National Institute of Oceanography' $(NIO)$ is a premier research organization in India.
It is headquartered in Dona Paula,Panaji,Goa.
It functions under the Council of Scientific and Industrial Research $(CSIR)$.

(D) Soil conservation is a set of management strategies for the prevention of soil erosion and the degradation of the earth's soil surface. Its primary goal is to protect the soil against loss caused by natural factors like wind and water,or human activities like deforestation and overgrazing. Therefore,option $(d)$ is the correct answer.

(B) The National Environmental Engineering Research Institute $(NEERI)$ is a research institute created and funded by the Government of India.
It is located in Nagpur,Maharashtra.
It was established in $1958$ as the Central Public Health Engineering Research Institute $(CPHERI)$ and was later renamed to $NEERI$ in $1974$.

(A) Deforestation refers to the large-scale removal of 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 precipitation. Therefore,the removal of forests disrupts the water cycle,leading to a significant reduction in rainfall.

(A) The $Chipko$ movement was a non-violent social and ecological movement by rural villagers,particularly women,in India.
It began in the $1970s$ in the Himalayan region to protect trees from being felled for commercial purposes.
While it started as a movement for protecting trees (forest conservation),it evolved into a broader movement for the preservation of the environment,including habitats and wildlife.

(B) Sal $(Shorea \text{ robusta})$ is a dominant tree species in the tropical moist deciduous forests of India.
These forests are prominently found in the sub-Himalayan tract, which includes the Dehradun valley.
Therefore, the Dehradun valley is well-known for its Sal forests.

(A) Petroleum is a fossil fuel formed over millions of years from the remains of ancient marine organisms. Because its rate of consumption is significantly faster than its rate of formation, it cannot be replenished on a human timescale. Therefore, it is classified as a $Non-renewable$ source of energy.

(B) According to the National Forest Policy $(1988)$ of India,the recommended forest cover for the plains is $33\%$ and for the hills is $67\%$.
However,the actual forest cover in India has historically hovered around $19-25\%$.
Based on the provided options,the range $18-27\%$ is the most accurate representation of the actual forest cover in India.

(C) Minerals and metals are generally considered non-renewable because their formation takes millions of years. However,they can be recycled. While some minerals and metals have very long recycling cycles,others can be recovered and reused,making them technically renewable through human intervention and recycling processes. Therefore,they are categorized as both renewable and non-renewable depending on the context of recycling and geological time scales.

(D) Forests play a crucial role in the environment by performing several essential functions:
$1$. Controlling pollution: Trees absorb $CO_2$ and other pollutants,helping to purify the air.
$2$. Prevention of soil erosion: The root systems of trees bind the soil together,preventing it from being washed away by water or blown away by wind.
$3$. Maintenance of ecological balance: Forests provide habitats for diverse species,regulate the water cycle,and maintain the climate,which is vital for the stability of ecosystems.
Therefore,all the given options are correct.

(C) Non-renewable resources are those that exist in finite amounts and cannot be replaced once they are consumed,or they take millions of years to form.
Coke is a carbon-rich fuel derived from coal,which is a fossil fuel.
Mineral substances are naturally occurring inorganic solids that take geological time scales to form.
Therefore,coke and mineral substances are classified as non-renewable sources.

(C) Renewable resources are those natural resources that can be replenished or regenerated over a short period of time through natural processes or human intervention.
Water is considered a renewable resource because it is continuously recycled through the hydrological cycle (evaporation,condensation,and precipitation).
In contrast,fossil fuels and metals are non-renewable because they take millions of years to form or exist in finite quantities.

(A) The Chipko Movement was a non-violent social and ecological movement by rural villagers,particularly women,in India.
It began in $1970$ in the Garhwal Himalayas (Gopeshwar) near the Alaknanda river.
While Sunder Lal Bahuguna is a very famous figure associated with the movement,the movement was first initiated by Chander Prasad Bhatt and the local women of the region to prevent the felling of trees by commercial contractors.

(D) Deforestation refers to the large-scale removal of forest cover.
$1$. It leads to soil erosion because the roots of trees hold the soil particles together; without trees,the topsoil is easily washed away by rain or blown away by wind.
$2$. It contributes to global warming because trees act as carbon sinks by absorbing $CO_2$. When forests are cleared or burned,the stored carbon is released into the atmosphere,increasing the greenhouse effect.
Therefore,both soil erosion and global warming are consequences of deforestation.

(C) The National Forest Policy $(1988)$ of India recommends that $33\%$ of the total geographical area of the country should be under forest cover to maintain ecological balance.
While the option provided in the original question was $30\%$,the scientifically and policy-accepted standard is $33\%$ (or one-third of the land area).

(D) Forests are essential ecosystems that provide a wide range of resources and services.
$(1)$ They provide various food items like fruits,nuts,and edible leaves.
$(2)$ Many plants found in forests are sources of life-saving medicines.
$(3)$ Forests provide wood,which is used as fuel and for making furniture.
$(4)$ Additionally,they provide shelter for wildlife and play a crucial role in purifying the environment by absorbing $CO_2$ and releasing $O_2$.
Therefore,it is necessary to conserve forests as they provide all of these benefits.

(A) Social forestry refers to the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental,social,and rural development. When this concept is applied to urban areas,including the planting of trees in cities,along roadsides,and in public parks to improve the urban environment,it is categorized under social forestry.

(D) Social forestry refers to the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental,social,and rural development.
It is designed to provide multiple benefits to the local community,including fuel wood,fodder,small timber,and minor forest products,thus serving multipurpose uses.

(D) non-renewable energy source is one that exists in a finite amount and cannot be replaced by natural means at a pace quick enough to keep up with consumption.
Nuclear energy relies on radioactive elements like uranium or thorium,which are finite resources found in the Earth's crust.
In contrast,hydropower,tidal power,and geothermal energy are considered renewable because they are replenished naturally on a human timescale.

(A) The Earth's surface is covered by approximately $75\%$ water,of which $97.5\%$ is saline water found in oceans.
Only $2.5\%$ of the total water on Earth is freshwater.
Out of this $2.5\%$ freshwater,the majority (about $1.97\%$) is stored in the form of frozen ice caps and glaciers,primarily located in polar regions like Antarctica and Greenland.
Therefore,more than $70\%$ of the world's freshwater is contained in polar ice.

(C) Mine spoil refers to the land that has been degraded or rendered barren due to mining activities. Mining operations generate large amounts of waste,and the accumulation of mine dust and debris destroys nearby vegetation,making the soil infertile and unsuitable for plant growth. This degraded land is specifically referred to as mine spoil.

(D) Conservation of natural resources refers to the sustainable management,protection,and wise utilization of natural resources to prevent their depletion and ensure their availability for future generations.
It encompasses:
$1$. Protection: Safeguarding resources from destruction or over-exploitation.
$2$. Management: Implementing strategies to maintain the balance of ecosystems.
$3$. Proper use: Ensuring resources are used efficiently without wastage.
Therefore,all the given options are correct.

(C) Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time without sufficient recovery periods.
This practice removes the protective vegetation cover from the soil surface.
As the vegetation is stripped away,the soil becomes exposed to wind and water,leading to the detachment and transport of topsoil,which is known as $Soil \ erosion$.
Therefore,overgrazing is a primary cause of land degradation and soil erosion.

(C) Forests play a crucial role in mitigating drought through several mechanisms:
$1$. Water Retention: The forest floor,covered with leaf litter and humus,acts like a sponge,absorbing rainwater and allowing it to percolate into the ground,thereby recharging groundwater levels.
$2$. Prevention of Soil Erosion: The root systems of trees bind the soil particles together,preventing topsoil erosion and maintaining soil moisture.
$3$. Transpiration: Forests contribute to the water cycle by releasing water vapor into the atmosphere through transpiration,which helps in cloud formation and maintaining local humidity.
Therefore,the retention of water and the prevention of soil erosion are the primary ways forests directly control the impact of drought.

(D) Deforestation refers to the large-scale removal of trees.
Trees and their root systems play a crucial role in binding the soil particles together and protecting the topsoil from being washed away by water or blown away by wind.
When trees are removed, the protective vegetation cover is lost, leaving the soil exposed to environmental forces.
Consequently, this leads to increased $Soil erosion$.

(C) The $Silent$ $Valley$ of $Kerala$ was preserved primarily because it is a unique,undisturbed $Natural$ $forest$ ecosystem. The area was saved through a significant public movement and agitation against the proposed construction of a hydroelectric project that would have destroyed this pristine habitat.

(B) The $Chipko$ movement was a non-violent social and ecological movement by rural villagers,particularly women,in India.
It began in the $1970s$ in the Himalayan region of Uttarakhand.
Its primary objective was the protection and conservation of trees and forests from deforestation.
Although it initially focused on protecting trees,the movement evolved to encompass the broader preservation of the environment,including habitats and wildlife.

(D) Forests play a crucial role in maintaining the health of the planet.
$1$. They act as carbon sinks,helping to control atmospheric pollution by absorbing $CO_2$.
$2$. Their root systems bind the soil,which is essential for the prevention of soil erosion.
$3$. They support biodiversity and regulate water cycles,which is vital for the maintenance of natural balance.
Therefore,all the given options are correct.

(B) Afforestation refers to the process of planting trees in an area that was not previously forested.
For effective and sustainable afforestation,indigenous (native) species should be preferred because they are well-adapted to the local climate,soil conditions,and ecosystem,promoting biodiversity and ecological balance.
Exotic species may sometimes become invasive or fail to support local wildlife,so they should only be employed on a selective basis.

(B) $Eichhornia \text{ } crassipes$, commonly known as water hyacinth, is an invasive species native to South America. It was introduced to India for its beautiful flowers, but it has become a major environmental problem. It grows rapidly in water bodies, causing clogging of waterways, depletion of dissolved oxygen, and harm to aquatic biodiversity, earning it the name 'Terror of Bengal'.

(D) Soil fertility is defined as the capacity of the soil to provide essential nutrients in adequate amounts and in proper proportions for the growth of plants.
While soil structure,water-holding capacity,and organic matter content are important physical and chemical properties,the primary measure of soil fertility is its ability to supply nutrients to support plant growth and sustain life.

(D) Soil conservation refers to the management and protection of soil to prevent its degradation,erosion,or loss of fertility.
It involves various strategies such as reforestation,terracing,and contour plowing to maintain the physical and chemical integrity of the soil.
Therefore,it is defined as the protection of soil against loss or degradation.

(B) The process of removal of the top layer of fertile soil by natural agents like wind or water is called soil erosion. This process leads to the loss of nutrients and reduces the land's productivity.

(D) Renewable energy sources are those that can be replenished naturally over a short period of time.
$A$. Cattle are living organisms,not an energy source.
$B$. Petroleum is a fossil fuel and is non-renewable.
$C$. Coal is a fossil fuel and is non-renewable.
$D$. Trees are a renewable source of energy because they can be replanted and grown again within a human lifespan,making them a sustainable biomass resource.

(C) Mulching is the process of covering the soil surface with organic materials like plant litter,straw,or synthetic materials like polyethylene. This practice is primarily helpful in moisture conservation by reducing evaporation,preventing soil erosion,suppressing weed growth,and maintaining soil temperature.

(D) The value of a resource is not an inherent property but is determined by several factors.
$1$. Quality: The grade or purity of a resource determines its utility.
$2$. Quantity: The availability or abundance of a resource affects its economic value.
$3$. Requirement and type of society: Different societies have different needs based on their level of technological development and cultural practices. $A$ material becomes a resource only when it satisfies human needs and has utility for a specific society.
Therefore,all these factors collectively determine the value of a resource.