What is what does subsistence means?

Subsistence refers to the practice of obtaining the basic necessities of life, such as food, water, shelter, and clothing, through one's own efforts or by relying on resources from their immediate environment. This may involve hunting, fishing, gathering, and cultivating crops, as well as engaging in activities such as bartering and trading to obtain goods and services. Subsistence lifestyles are often found in rural and remote areas where traditional and cultural practices are still prevalent. However, subsistence living can also be found in urban areas where low-income families may struggle to obtain basic necessities.