The key answer of exercise 5

Sample answer

1. Leaving rubbish on the field: This is not sustainable. It leads to environmental pollution, harms wildlife, and can contaminate soil and water sources. It contributes to the depletion of natural resources and creates a negative impact on ecosystems and communities.
2. Drinking from stainless steel bottles (flask): This is sustainable. Stainless steel bottles are reusable and durable, reducing the need for single-use plastic bottles. By using a reusable bottle, you minimize waste generation and the consumption of finite resources required to produce single-use plastics. Additionally, stainless steel is a recyclable material, further reducing its environmental footprint.
3. Nomadic house: This can be sustainable depending on various factors such as the materials used, the energy sources employed, and the impact on local ecosystems. Nomadic houses, like yurts or tents, can be designed to have minimal environmental impact and can allow for a more sustainable lifestyle by reducing energy consumption and promoting a closer connection to nature. However, if not managed properly, nomadic living could lead to overexploitation of natural resources in certain areas.
4. Cycling: Cycling is generally considered sustainable. It is an environmentally friendly mode of transportation that produces no emissions during use. Cycling reduces reliance on fossil fuels, decreases air pollution, and promotes physical health. However, the sustainability of cycling can vary depending on factors such as the manufacturing process of bicycles, the infrastructure in place to support cycling, and the disposal of old bicycles and related equipment.