The chart shows critical pH levels for aquatic organisms. Which two organisms are most at risk from acid rain?
Humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere. Power plants release sulfur dioxide and nitrogen oxide when they burn fossil fuels, such as coal, to produce electricity. These pollutants cause acid rain. What name is given to this type of pollution?
The pie chart shows the main causes of acid rain in the USA. Which of the following would be the best way to reduce acid rain?