For years, a large hog farm in rural eastern North Carolina has used open-air lagoons to store animal waste. After several heavy rainstorms, nearby residents noticed a strong odor and brownish water in a creek that flows into a local river. A local family reported that fish and frogs had disappeared from the small pond behind their home.
County officials tested the creek and found high levels of bacteria and nitrogen compounds. Farmers nearby also complained that their wells had started to smell bad.

What clues in the text suggest that water quality has changed?

What human activity might be responsible?

2. human activity might be responsible for this because they put the pig waste in the open air lagoon instead of finding a better way to put it in store instead they were lazy and put it in the lagoon causing the creek water to turn brown and have a strong odor and causing fish and frogs to leave there home.