1) Airline 2) Biologist 3) Conservationist 4) Environmentalist 5) Green 6) Life scientist 7) Preservationist 8) Student of environments 1) Environmentalist 
(e-kol´o-jist) a specialist in ecology.
[n] - a biologist who studies the relation between organisms and their environment
A scientist who studies the interrelationship of living things to one another and to their environment.
ecologist One who specializes in biological sciences that deal with the relationship between organisms and their environment. Related 'home; house' word units: domo-; ecdemo-; nosto-.
noun a biologist who studies the relation between organisms and their environment
a scientist who studies the interrelationship of living things to one another and to their environment.