What is the duties of environmentalist

Environmentalists study the best ways to protect the environment from harmful pollution. they also assist the general public in ways to learn to make the best use of natural resources. 

Where are the statements so i can ?

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.