1) Ecology terminology 
Mesology (Ancient Greek μέσος, mésos `middle` and -λογια -logia `branch of study`) is a former term for the science ecology or the study of the mutual interrelationships between the living creatures and their biological, sociological and environmental surroundings. (Not to be confused with mesology as being `the study of ways of ac...
ecology
mesology A former term for ecology or the study of the interrelationships between organisms and their environents and each other.