Explanation:

Introduction:
The question is about the crisis in energy requirements due to the increasing population and the role of non-conventional energy sources in solving this crisis. We need to determine which of the given statements are true.

Statement A: Crisis in the energy requirements due to the increasing population can be solved by Non-conventional energy sources

Non-conventional energy sources refer to renewable energy sources such as solar, wind, hydro, geothermal, and biomass. These sources have the potential to provide a sustainable and clean solution to the increasing energy demands caused by the growing population. Here are the reasons why statement A is true:

1. Renewable and Sustainable: Non-conventional energy sources are renewable, meaning they can be replenished naturally. They are available in abundance and can provide a continuous and sustainable supply of energy. In contrast, conventional energy sources like fossil fuels are depleting and will eventually run out.

2. Environmentally Friendly: Non-conventional energy sources produce little to no greenhouse gas emissions, making them environmentally friendly. This helps reduce air pollution and mitigates the impact of climate change. In contrast, conventional energy sources release harmful pollutants and contribute to global warming.

3. Diversification of Energy Mix: Relying on non-conventional energy sources allows for the diversification of the energy mix. This reduces the dependence on a single energy source, such as fossil fuels, which are finite and subject to price volatility. Diversification also enhances energy security and reduces the risk of energy crises.

4. Technological Advancements: Over the years, there have been significant technological advancements in harnessing non-conventional energy sources. This has led to increased efficiency and cost-effectiveness, making them more viable alternatives to conventional energy sources.

Statement B: Non-conventional energy sources do not pose a threat to the environment

Non-conventional energy sources are generally considered to be environmentally friendly, but they are not entirely devoid of environmental impacts. Here are some points to consider:

1. Land and Habitat Impacts: Some non-conventional energy sources, such as large-scale solar and wind farms, require significant land areas for installation. This can result in habitat disruption and loss of biodiversity. However, careful site selection and planning can minimize these impacts.

2. Visual and Noise Impacts: Wind turbines and solar panels can alter the visual landscape, especially in scenic areas. Additionally, wind turbines can generate noise, although modern designs aim to minimize this impact.

3. Material Extraction and Waste: The production of certain non-conventional energy technologies, such as solar panels and batteries, requires the extraction of raw materials. This extraction process can have environmental consequences if not properly managed. Additionally, the disposal of end-of-life components can pose challenges in terms of waste management.

Overall, while non-conventional energy sources are generally considered to be more environmentally friendly compared to conventional sources, they still have some environmental impacts that need to be addressed.

Conclusion:
Based on the above points, we can conclude that both statement A and statement B are true. Non-conventional energy sources have the potential to solve the crisis in energy requirements caused by the increasing population, and while they are generally environmentally friendly, they are not entirely without environmental impacts.