Ecological phenomena refer to natural events and processes that occur within ecosystems, influencing the relationships between organisms and their environment. Examples include food chains, where energy flows from one organism to another, and biogeochemical cycles, which describe the movement of elements like carbon and nitrogen through living and non-living components of the ecosystem. These phenomena can also include seasonal changes, such as migration patterns of birds or the blooming of flowers, which are often triggered by environmental factors like temperature and daylight. Understanding these processes is crucial for maintaining biodiversity and ecosystem health.