Question

put these stages in order of how to clean groundwater.

1. perform remediation
2. model the contaminant plume
3. remove the pollutant source
4. monitor the extent of the pollutant

a 3, 4, 2, 1
b 1, 2, 3, 4
c 4, 3, 2, 1
d 1, 3, 2, 4

Explanation:

1. First, you need to monitor to understand the pollutant's spread.
2. Then, remove the source to stop new pollution.
3. Next, model the plume to plan remediation.
4. Finally, perform the remediation to clean the groundwater.

Answer:

a 3, 4, 2, 1