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Answered on 15 Apr Learn Sources Of Energy

Sadika

Geothermal energy is heat energy derived from the Earth's internal heat. It can be harnessed for various purposes, including electricity generation and direct heating applications. Advantages of wind energy include: Renewable: Wind energy is a renewable resource, meaning it can be replenished naturally... read more

Geothermal energy is heat energy derived from the Earth's internal heat. It can be harnessed for various purposes, including electricity generation and direct heating applications. Advantages of wind energy include:

  1. Renewable: Wind energy is a renewable resource, meaning it can be replenished naturally and is not depleted with use.
  2. Clean: Wind energy production does not produce greenhouse gas emissions or air pollutants, contributing to reduced environmental impact and improved air quality.
  3. Cost-effective: Once installed, wind turbines have relatively low operational and maintenance costs compared to conventional fossil fuel-based power plants.

 

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Answered on 15 Apr Learn Sources Of Energy

Sadika

(a) The device used to convert solar energy into heat is a solar water heater or solar thermal collector. (b) The device used to convert solar energy into electricity is a solar photovoltaic (PV) panel or solar cell panel.
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Answered on 15 Apr Learn Sources Of Energy

Sadika

The principle of generation of electric power by a boiling water type nuclear reactor involves: Nuclear fission reactions occurring in the reactor core, where uranium fuel rods undergo controlled chain reactions, producing large amounts of heat. The heat generated from nuclear fission is used to boil... read more

The principle of generation of electric power by a boiling water type nuclear reactor involves:

  1. Nuclear fission reactions occurring in the reactor core, where uranium fuel rods undergo controlled chain reactions, producing large amounts of heat.
  2. The heat generated from nuclear fission is used to boil water and produce steam.
  3. The high-pressure steam produced is then used to drive turbines connected to generators, converting the mechanical energy of the turbines into electrical energy. The coolant used in such a reactor is water.
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Answered on 15 Apr Learn Sources Of Energy

Sadika

(a) Four gases mainly present in biogas are methane (CH4), carbon dioxide (CO2), hydrogen (H2), and traces of hydrogen sulfide (H2S). (b) Advantages of using biogas over fossil fuels include: Renewable: Biogas is produced from organic waste materials such as animal dung, crop residues, and kitchen waste,... read more

(a) Four gases mainly present in biogas are methane (CH4), carbon dioxide (CO2), hydrogen (H2), and traces of hydrogen sulfide (H2S). (b) Advantages of using biogas over fossil fuels include:

  1. Renewable: Biogas is produced from organic waste materials such as animal dung, crop residues, and kitchen waste, which are continuously generated and can be replenished naturally.
  2. Environmentally Friendly: Biogas production reduces methane emissions from organic waste decomposition and displaces the use of fossil fuels, contributing to reduced greenhouse gas emissions and mitigating climate change.

 

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Answered on 15 Apr Learn Our Environment

Sadika

One advantage of ozone is its role in the stratosphere, where it forms the ozone layer that absorbs harmful ultraviolet (UV) radiation from the sun, protecting life on Earth from excessive UV exposure. One disadvantage of ozone is its harmful effects on human health and the environment when present... read more

 

  • One advantage of ozone is its role in the stratosphere, where it forms the ozone layer that absorbs harmful ultraviolet (UV) radiation from the sun, protecting life on Earth from excessive UV exposure. One disadvantage of ozone is its harmful effects on human health and the environment when present in high concentrations in the lower atmosphere, contributing to smog formation and respiratory problems.

 

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Answered on 15 Apr Learn Our Environment

Sadika

An ecosystem is a community of living organisms (biotic factors) interacting with their physical environment (abiotic factors). Components of an ecosystem include producers, consumers, decomposers, habitats, soil, water, air, and climate.
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Answered on 15 Apr Learn Our Environment

Sadika

Biodegradable substances are those that can be broken down into simpler substances by the action of microorganisms such as bacteria and fungi, leading to their decomposition and recycling in the environment. Non-biodegradable substances are those that cannot be broken down by natural processes and... read more

 

  • Biodegradable substances are those that can be broken down into simpler substances by the action of microorganisms such as bacteria and fungi, leading to their decomposition and recycling in the environment. Non-biodegradable substances are those that cannot be broken down by natural processes and persist in the environment for a long time, causing pollution and environmental damage.

 

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Answered on 15 Apr Learn Our Environment

Sadika

Management of natural resources refers to the sustainable utilization, conservation, and preservation of natural resources to meet present and future human needs while maintaining the health of ecosystems. Here are some key aspects and strategies involved in the management of natural resources: Sustainable... read more

Management of natural resources refers to the sustainable utilization, conservation, and preservation of natural resources to meet present and future human needs while maintaining the health of ecosystems. Here are some key aspects and strategies involved in the management of natural resources:

  1. Sustainable Resource Use: Implementing practices that ensure the use of natural resources in a sustainable manner, without depleting or degrading them. This includes adopting technologies and techniques that minimize resource consumption and waste generation.

  2. Conservation and Preservation: Protecting and conserving natural resources, such as forests, water bodies, wildlife, and biodiversity, through the establishment of protected areas, wildlife reserves, and conservation programs. Preservation involves maintaining natural ecosystems in their original state without significant human interference.

  3. Resource Allocation and Planning: Developing comprehensive plans and policies for the allocation and utilization of natural resources based on scientific assessments, environmental considerations, and socio-economic needs. This involves balancing competing interests and ensuring equitable distribution of resources.

  4. Restoration and Rehabilitation: Rehabilitating degraded ecosystems and restoring natural habitats through reforestation, afforestation, watershed management, soil conservation, and restoration of wetlands and degraded lands. This helps to improve ecosystem health and resilience.

  5. Regulatory Frameworks and Enforcement: Establishing legal and regulatory frameworks to govern the sustainable use of natural resources, including environmental laws, land use regulations, and resource management policies. Enforcement mechanisms such as monitoring, compliance, and enforcement actions are essential for ensuring adherence to regulations.

  6. Community Participation and Stakeholder Engagement: Involving local communities, indigenous peoples, and stakeholders in decision-making processes related to natural resource management. This ensures that resource management initiatives are inclusive, culturally appropriate, and aligned with the needs and priorities of local communities.

  7. Technology and Innovation: Promoting the development and adoption of sustainable technologies and innovative solutions for resource management, such as renewable energy technologies, water conservation measures, sustainable agriculture practices, and eco-friendly manufacturing processes.

  8. Education and Awareness: Increasing public awareness and understanding of the importance of natural resources, conservation principles, and sustainable lifestyles through education, outreach programs, and public awareness campaigns. This helps to foster a culture of environmental stewardship and responsible resource use.

  9. International Cooperation and Collaboration: Facilitating international cooperation and collaboration among countries to address transboundary environmental issues, conserve shared natural resources, and promote sustainable development goals. This includes partnerships, agreements, and initiatives at the regional and global levels.

Overall, effective management of natural resources requires a holistic and integrated approach that considers environmental, social, and economic factors, and seeks to balance conservation with development objectives for the benefit of present and future generations.

 
 
 
 
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Answered on 15 Apr Learn Management of Natural Resources

Sadika

Three measures to lower the use of coal and petroleum include: Increasing energy efficiency and conservation measures to reduce overall energy consumption. Promoting the use of renewable energy sources such as solar, wind, and hydropower to replace coal and petroleum-based energy sources. Implementing... read more

Three measures to lower the use of coal and petroleum include:

  1. Increasing energy efficiency and conservation measures to reduce overall energy consumption.
  2. Promoting the use of renewable energy sources such as solar, wind, and hydropower to replace coal and petroleum-based energy sources.
  3. Implementing policies and incentives to encourage the adoption of alternative transportation fuels, such as electric vehicles and biofuels, to reduce reliance on petroleum.
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Answered on 15 Apr Learn Management of Natural Resources

Sadika

Rainwater harvesting is the collection and storage of rainwater for future use. It can be done at the local level through the installation of rainwater harvesting systems such as rooftop rainwater harvesting, rainwater storage tanks, and permeable pavements. Benefits of rainwater harvesting include: read more

Rainwater harvesting is the collection and storage of rainwater for future use. It can be done at the local level through the installation of rainwater harvesting systems such as rooftop rainwater harvesting, rainwater storage tanks, and permeable pavements. Benefits of rainwater harvesting include:

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