E1C3O1L1O1G2I1E1S1
12 points
ECOLOGIES is validvalid
ECOLOGY, an environmental science [n]
ECOLOGY, the study of the interrelationships between life forms and their environment, also OECOLOGY [n]
ECOLOGY, an environmental science [n]
ECOLOGY, the study of the interrelationships between life forms and their environment, also OECOLOGY [n]