Introduction Clean air is essential for the survival of all living organisms on Earth. The atmosphere provides oxygen for respiration, regulates temperature, and protects life from harmful solar radiation. However, rapid industrialization, urbanization, and increasing human activities have significantly deteriorated air quality across the world. One of the most serious environmental problems emerging from these…
Introduction All living organisms depend on one another for energy and survival. In nature, energy does not exist independently but flows from one organism to another through feeding relationships. These relationships form structured pathways through which energy and nutrients move within ecosystems. Two important concepts that explain these relationships are the food chain and the…
Life on Earth exists in an extraordinary variety of forms, ranging from microscopic organisms to large animals and towering plants. This immense variety of living organisms and their interactions with ecosystems is collectively known as biodiversity. Biodiversity is essential for maintaining ecological balance, supporting life processes, and ensuring the sustainability of natural resources. In the…
Introduction The environment consists of a complex network of living organisms and non-living elements that interact continuously to sustain life on Earth. These interactions form the foundation of ecological systems and determine how organisms survive, grow, and reproduce. In the study of Ecology, the environment is broadly divided into two major components: biotic components and…