The fourth of an integrated sequence of laboratory-based courses. Subjects include astronomy and the earth's climate. Two lecture hours and three laboratory hours a week for one semester. Only one of the following may be counted: UTeach-Natural Sciences 306M, Natural Sciences 306M. Prerequisite: UTeach-Natural Sciences 306J and 306K (Natural Sciences 306J and 306K) with a grade of at least C- in each.