Concept:The study of how living organisms interact with their surroundings, including living and non-living factors, is called ecology.
Explanation:The given expression refers to the relation of animals and plants to their animate and inanimate surroundings.
In other words, it describes the study of biotic and abiotic environmental interactions.
This field is known as ecology.
Ecology is a branch of biology.
It examines how organisms depend on and affect their environment.
Ethnology deals with the study of human races, cultures, and societies.
Demography studies human populations, including birth, death, and migration.
Epigraphy studies inscriptions and ancient writings.
Therefore, the expression correctly matches ecology, not the other options.
Answer:Ecology