Given the question: Fact 1: Landfills have a negative impact on the environment. Fact 2: Landfill leachates and groundwater contamination. Given the two facts above, answer the question "what have a negative impact on the environment" with the following options: - harmful substances - groundwater contamination - harvesting - fish - major threat to health - Sulfur dioxide - storms - Greenhouse gases
The answer is:
groundwater contamination