EVR 1001 - Introduction to Environmental Science EVR 1001 - Introduction to Environmental Science (3 Credit Hours) (A.A.) Three hours per week with no laboratory component. The course meets Area V requirements for the A.A./A.S. general education requirements. This course is a survey of basic chemical, biological, and physical principles of environmental science and their applications to environmental issues. This course is appropriate for students in a wide range of disciplines or programs. View class scheduling information for this course.