Management Of Natural Resources

The correct answer is "Reduce, recycle, reuse". This combination of actions helps in conserving natural resources for long term use. By reducing our consumption and waste generation, we can minimize the strain on natural resources. Recycling allows us to convert waste materials into new products, reducing the need for extracting and processing raw materials. Reusing items instead of constantly buying new ones also reduces resource depletion. Together, these three actions promote sustainability and help preserve our natural resources.

The Bishnoi community of Rajasthan is known for their strong commitment to the conservation of forests and wildlife. They have a deep respect for nature and believe in the protection and preservation of all living beings. The Bishnois follow strict principles that forbid them from harming animals or cutting down trees. They have played a significant role in safeguarding the environment by actively participating in afforestation and wildlife conservation efforts. Their actions reflect their dedication towards maintaining the balance and harmony of the ecosystem.

Ahars, Kattas, Bhundhis, and Khadins are all traditional methods of water harvesting. These methods are commonly used in arid and semi-arid regions to capture and store rainwater for agricultural purposes. Ahars are small reservoirs used to store water for irrigation, while Kattas are diversion channels that redirect rainwater into fields. Bhundhis are small earthen embankments that capture rainwater in depressions, and Khadins are check dams that store water in small reservoirs. Therefore, the correct answer is water harvesting.

Afforestation refers to the process of planting trees in an area that has previously been devoid of forest cover. Trees play a crucial role in maintaining the water cycle by absorbing water from the ground and releasing it into the atmosphere through transpiration. By increasing the forest cover through afforestation, the rate of groundwater depletion can be reduced. The roots of trees act as natural filters, preventing water from directly seeping into the ground and instead allowing it to be slowly absorbed. This helps in replenishing the groundwater levels and maintaining a sustainable water supply.

Sustainable development aims to meet the current basic human needs while also preserving resources for future generations. It recognizes the importance of considering the viewpoints of all stakeholders, including different social, economic, and environmental perspectives, to ensure a balanced and inclusive approach to development. By involving all stakeholders, sustainable development can address the diverse needs and interests of various groups, leading to more effective and equitable outcomes.

The correct answer is "Their skin is expensive." This suggests that large numbers of snakes are killed because their skin holds a high value in the market. This could be due to the demand for snake skin products, such as purses, shoes, or belts, which drives the hunting and killing of snakes. The high value of snake skin makes it profitable for individuals to engage in the activity, leading to the large-scale killing of snakes.

A pH level below 7 indicates that the river water is polluted. pH is a measure of the acidity or alkalinity of a solution, with 7 being neutral. A pH below 7 indicates that the water is acidic, which can be a sign of pollution. Pollutants such as industrial waste, agricultural runoff, or sewage can lower the pH of the water, making it more acidic. Therefore, a pH below 7 suggests that the river water is contaminated and not in its natural state.

The Arabari forest of Bengal is dominated by Sal. Sal trees are commonly found in the tropical forests of India, including the Arabari forest. Sal is a large deciduous tree that is highly valued for its timber, which is used in construction, furniture making, and other industries. Sal trees also play a crucial role in the ecosystem, providing habitat for a variety of wildlife species. The dominance of Sal in the Arabari forest indicates the suitability of the environment for its growth and highlights its importance in the region.

Silviculture is the correct answer because it refers to the practice of growing and managing forests. It involves the cultivation of trees for various purposes, such as timber production, conservation, and restoration of damaged forests. Silviculture includes activities like planting, pruning, thinning, and harvesting trees to ensure their sustainable growth and development. This major program focuses on replenishing damaged forests by implementing effective silvicultural practices to restore and maintain healthy forest ecosystems.

The people who live in urban areas are not direct stakeholders in the management or conservation of forests. While they may indirectly benefit from the resources and services provided by forests, such as clean air and water, they do not have a direct role in making decisions or implementing conservation practices in forests. Direct stakeholders typically include those who have a direct interest or involvement in forests, such as paper mill owners, forest department officials, and conservation campaigners.

Khadins are being used in Rajasthan to recharge groundwater. Khadins are traditional water harvesting structures that collect and store rainwater, allowing it to percolate into the ground and replenish the groundwater table. This helps in maintaining a sustainable water supply for irrigation and other purposes, especially in arid regions like Rajasthan.

CO, or carbon monoxide, is a poisonous gas that reduces the oxygen-carrying capacity of blood to a large extent. When inhaled, it binds to hemoglobin in red blood cells, preventing them from carrying oxygen effectively. This can lead to oxygen deprivation in the body's tissues and organs, causing symptoms such as headache, dizziness, and even death in severe cases. CO is produced by the incomplete combustion of carbon-based fuels, such as those found in car exhaust fumes and faulty heating systems. It is important to be aware of the dangers of CO poisoning and take necessary precautions to prevent exposure.

The most likely reason for the pH of the water in the river to be in the range of 3.5 to 4.5 is the waste being discharged from a car battery manufacturing factory. Car batteries contain sulfuric acid, which is highly acidic and can lower the pH of water. Discharging this waste into the river can lead to the acidity levels in the water increasing, resulting in a lower pH value.

The disposal of unburnt corpses into the river water is the main reason for the abundant coliform bacteria in the water of river Ganga. When unburnt corpses are disposed of in the river, they release various pathogens and bacteria into the water, including coliform bacteria. These bacteria thrive in the water, leading to high levels of contamination. This practice contributes to the pollution of the river and poses a significant health risk to those who use the water for drinking, bathing, or other purposes.

Carbon monoxide does not contribute to acid rain because it is not a precursor to the formation of acidic compounds in the atmosphere. Acid rain is primarily caused by the release of sulfur dioxide, nitrogen oxides, and carbon dioxide into the air, which react with water vapor to form sulfuric acid, nitric acid, and carbonic acid respectively. Carbon monoxide is a byproduct of incomplete combustion and does not directly participate in the chemical reactions that lead to the formation of acid rain.