A non-natural effect on the environment, often caused by humans

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.

Explanation:

Humans have a variety of effects on the physical environment, including overcrowding, pollution, fossil fuel combustion, and deforestation. Climate change, soil erosion, poor air quality, and undrinkable water have all been induced by changes like these.

c.

explanation:

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.