Choices:
1). harmful substances
2). groundwater contamination
3). harvesting
4). fish
5). major threat to health
6). Sulfur dioxide
7). storms
8). Greenhouse gases
Q: Fact 1: Landfills have a negative impact on the environment. Fact 2: Landfill leachates and groundwater contamination. Given the two facts above, what have a negative impact on the environment?
A:
2).