Is a social movement dedicated to protecting the natural world from the undesirable changes brought about by human actions.
1. environmentalism
2. conservationism
3. environmental science
4. preservationism

1. Environmentalism

Environmentalism is a philosophy, ideology and social movement regarding concerns for environmental protection and improvement of the health of the environment, particularly as the measure for this health seeks to incorporate the impact of changes to the environment on humans, animals, plants and non-living matter.

answer; overt behavior;