1. naturally occurring bacteria
2. nuclear waste
3. sewage
4. landfill leachate
Update:
I think its 3. sewage.
Update 2:
I change my answer to 2. nuclear waste.
Update 3:
After I submit HW, I found out that its 3. sewage.
4
✅ Answers
? Favorite Answer
I would say sewage, it is nasty where all of that goes. We have been learning a lot about this in school so I would agree with you.
Septic Tanks. Mike
Source(s): logical/ I know of exact site now.near our city.
How about agricultural run-off? And recently we get petrochemical fracking (hi-pressure fracturing). Some Mining does no good. Etc. -‘nomad 13’-
Greenies peeing.