Modes of subsistence refer to the strategies societies employ to obtain food and other necessities from their environment. These strategies are deeply intertwined with a society's social organization, technology, economy, and worldview. Anthropologists typically identify several primary modes:

1. Foraging (Hunting and Gathering): The oldest mode, involving collecting wild plants and hunting wild animals. Foragers typically live in small, nomadic bands, have egalitarian social structures, and possess extensive knowledge of their environment.
2. Horticulture: Small-scale, non-intensive cultivation of plants using simple tools (e.g., digging sticks, hoes) and often relying on slash-and-burn techniques. Horticulturalists typically live in settled villages, have slightly larger populations than foragers, and may exhibit some social stratification.
3. Pastoralism: The domestication and herding of animals (e.g., cattle, sheep, goats) for food, milk, and other products. Pastoralists are often nomadic or semi-nomadic, following their herds to pastures. Their social organization often emphasizes kinship and territoriality.
4. Agriculture: Intensive cultivation of land using plows, irrigation, fertilizers, and often draft animals. Agriculture supports larger, denser populations, leading to permanent settlements, complex social stratification, specialized labor, and the development of states and cities.
5. Industrialism/Post-Industrialism: Characterized by mass production, complex machinery, wage labor, and a highly specialized division of labor. Food production is often industrialized, and a significant portion of the population is engaged in non-food-producing sectors. This mode is associated with globalized economies and highly complex social structures.

Each mode of subsistence represents an adaptation to specific environmental conditions and technological capabilities, shaping the fundamental aspects of human societies.