<h3>Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.</h3><h3 />
The last paragraph explains that too many false alarms can be dangerous to one's health, which is important to explain since the rest of the passage seems to promote stress as a way to survive or thrive in moments of crisis.
