ENVS 121. Field Methods in Environmental Science. This field course includes the direct observation of human impact on specific environments and examples of mitigation strategies. Students will learn information gathering and data presentation methodologies useful in environmental impact assessment. Lecture three hours per week; one-day and weekend field trips will be arranged. Note: Course also substitutes for ENVS 175. Prerequisite: Must be an ENVS major or minor; BIO 160, CHEM 1A or CHEM 6A or concurrent enrollment. Graded: Graded Student. Units: 2.0.