Your friend, an 8th-grade earth science teacher at the local middle school, is organizing an Earth Day celebration for his students and their families. He knows you have recently been learning about environmental policies in this environmental science class and has asked you to be one of several guest speakers at the event. He would like you to explain to the students how scientific research and public awareness of an environmental issue led to an environmental policy or law. The goal is for the 8th-grade students to understand how people and communities (scientific community, government bodies, citizens of a country, etc.) can effect positive change for the environment. Address the following : Summarize the environmental issue. What are its causes? What are the effects on the environment and people? Consider multiple perspectives and locations, as applicable. Explain how economics and/or personal lifestyle choices or behaviors are related to this issue. Describe how individuals, communities, and/or governments have worked to address the issue. Examine the impact of relevant legislation or initiatives. What are the benefits? Have there been any consequences?