 How are humans impacting the environment and how can we minimize the negative effect we have on ecosystems?  The Problems of the Earth: kLueNQ

 What did you see in the video?  What’s causing it?

 How do you know it is “acidic”?

 Pollutants › Burning fossil › Nitrogen fertilizers Pollutants in atmosphere combine with water droplet = acid rain

 Water cycle!

 Share your ideas  Southern Europe, Eastern North America, Indian and China (Asia)

 p – potenz, H – hydrogen  Scale shows how strong acids are  Pure water: pH=7  Anything with a pH 7 is basic  Normal rain is 5.7, slightly acidic  Acid rain: pH=?

 pH indicators › Litmus paper  pH meter and probe

 pH lab  Technology?  Lab report format  Homework › Introduction: Background Questions