#1 Air pollution.
Air is what we breath. Air supplies us with oxygen which is essential for our bodies to live. Air is 99.9% nitrogen,oxygen,water vapor and insert gases. Human activities can release substances into the air, some of which can cause problems for humans, plants, and animals...causing air pollution.
#2 Acid Rain
Air pollution leads to health problems, and can affect the environment through Acid Rain. Acid Rain is caused by factories and car exhaust. The pollution gets into the clouds and causes the rain to be unusually acidic. This is harmful to plant life, aquatic animals, humans (cancer), and even buildings and sculptures.
#3 Nuclear Disaster
