Ecology studies organisms' relationships with each other and their environment at different levels: individual, population, community, ecosystem, and biosphere.
Individual level focuses on one member of a species
Population level looks at interactions among members of the same species.
Community level studies relationships among different species in an area.
Ecosystem level considers both biotic and abiotic elements in an area.
Biosphere level encompasses all ecosystems on the planet.
Individual Level - The smallest unit of analysis in ecology, focusing on the behavior and physiology of individuals within a species.
Population Level - Refers to a group of individuals belonging to the same species living together in a particular geographic location.