Define ecosystem.

An ecosystem is defined as a system of interdependent organisms and their physical environment. This definition captures the essence of interactions among various biotic (living) elements like plants, animals, fungi, and microorganisms, as well as abiotic (non-living) factors such as water, soil, air, and climate. These components do not exist in isolation; they influence each other and form a complex web of relationships. For example, plants provide oxygen and food, while animals contribute to pollination and seed dispersal, creating a balanced environment. The physical environment provides essential resources such as nutrients, light, and space crucial for survival. Overall, the term "ecosystem" signifies the intricate and dynamic connections between organisms and their surroundings, highlighting that they function together as a cohesive unit. This perspective encompasses not just the biological community, but also the physical context in which these organisms thrive.