The term 'environment-related' can be summarized by two crossword solutions: 'ecologic' (8 letters) and 'ECOLOGICAL' (10 letters). Both terms refer to the study of the interactions between organisms and their environment, and the effects of human activity on the environment. Ecologic and ECOLOGICAL are often used interchangeably, but ecologic is more focused on the individual organism, while ECOLOGICAL is more focused on the environment as a whole.