Câu hỏi:

1. Urban gardening has become a popular trend in many cities. People are finding creative ways to grow their own food in limited spaces such as balconies, rooftops, and small backyards. This trend is growing as more people become aware of the benefits of locally sourced food.

2. One of the key benefits of urban gardening is that it provides fresh, organic food. By growing their own vegetables, fruits, and herbs, urban dwellers can avoid pesticides and other chemicals often found in store-bought produce.

3. Urban gardening also offers mental health benefits. Studies have shown that gardening reduces stress and promotes relaxation. The act of caring for plants can be therapeutic, allowing people to feel more connected to nature despite living in a busy city.

4. Additionally, urban gardens can help improve the local environment. Plants help purify the air, and green spaces in cities contribute to reducing the urban heat island effect. They also provide habitats for local wildlife, which is essential for biodiversity.

5. However, urban gardening does come with challenges. Limited space, lack of knowledge, and high initial costs can make it difficult for some people to start a garden. Yet, with resources like community gardens and online tutorials, more people are overcoming these barriers.

6. Despite these challenges, urban gardening continues to gain popularity. Many cities are encouraging the practice by offering support and resources to individuals and communities.

7. As urban gardening continues to grow, it has the potential to improve the quality of life in cities. It not only provides fresh food but also contributes to a healthier and more sustainable urban environment.

What is the main topic of the passage?