Answer: Interactions
Step-by-step explanation:Ecology can be defined as the branch of science that helps us to study the interactions between the organism and its environment.
Environment consists of both biotic factors and abiotic factors. The interaction between them makes a healthy environment.
The various types of biogeochemical cycles such as carbon cycle, water cycle and et cetera has interaction with the living components such as plants and animals.
This interaction is studied with the help of ecology