Several methods are employed in environmental surveillance, including: 1. Remote Sensing: Using satellite imagery and drones to monitor environmental changes over large areas. 2. Biomonitoring: Analyzing biological samples such as blood, urine, or tissues to detect exposure to environmental toxins. 3. Geographic Information Systems (GIS): Mapping environmental data to visualize and analyze spatial patterns. 4. Environmental Sampling: Collecting samples from air, water, soil, and other environmental media for laboratory analysis.
