NSES Content Standard F 
Science in Personal and Social Perspectives: Changes in environments
Grades K-4, page 140

Changes in environments can be natural or influenced by humans. Some changes are good, some are bad, and some are neither good nor bad. Pollution is a change in the environment that can influence the health, survival, or activities of organisms, including humans.

Benchmark 4C The Physical Setting: Processes that Shape the Earth
Grades 6-8, page 73
Human activities, such as reducing the amount of forest cover, increasing the amount and variety of chemicals released into the atmosphere, and intensive farming, have changed the earth's land, oceans, and atmosphere. Some of these changes have decreased the capacity of the environment to support some life forms.

Benchmark 5D The Living Environment: Interdependence of Life
Grades 3-5, page 116
Changes in an organism's habitat are sometimes beneficial to it and sometimes harmful.