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Case 2: The Neighborhood Pond Problem (Henderson, NC)

A new neighborhood was built beside a small community pond. Within a few months, the water became cloudy and green. Some residents noticed the pond smelled like rotten eggs and had floating patches of algae. Ducks stopped visiting.
A science club tested the pond water and found high phosphate levels. Several lawns nearby were treated with fertilizers right before a week of heavy rain.

Student Task:

What evidence in the story shows the water quality has changed?

What connection can you make between the neighborhood’s actions and the pond’s condition?

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They built a neighborhood behind a pond , they used fertilizers on the houses next to the pond and they never thought to take care of the pond water . Which resulted the pond to have high phosphate levels.

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The water in the pond turned cloudy and green, and it smelled bad and had algae on the surface. Ducks stopped coming. The science club found lots of phosphates in the water. The nearby lawns had fertilizers on them before heavy rain. This shows that the water quality got worse after people added fertilizers nearby, which caused the algae and bad smell. The fertilizer runoff probably caused the pond to become polluted.

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The water quality changed because in the text it says the pond smelled like rotten eggs, and there were patches of algae floating. The neighborhood was clearly not protecting this pond which led to it's condition.

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1. some of the evidence in the story that indicates that the water qualities has changed are how the pond smelled like rotten eggs and algae was in them and that the pond was also green.

2. something I could connect between the neighborhood action to the pond was they fertilized there grass and I'm inferencing that when they did that the fertilizer got into the pond due to the heavy rain and because they did not care to think of how the fertilizer would damage the pond.

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The evidence in the story that shows the water quality has changed is the water becoming cloudy and green, the presence of floating patches, and the ducks that stopped visiting. The connection between the neighborhood's actions and the pond's condition is that the fertilizers used on the lawns near the pond contained phosphate. Which made the pond polluted.

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The water became cloudy and smelly. As well as having algae floating on the surface. The neighborhood used fertilizer which caused the pond to be polluted and nasty.

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The evidence from the text is that the water started to smell like rotten eggs and became green. A connection that I can make is that the chemicals that are used in the neighborhood were washed into the water and contaminated it.

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The evidence in the story says that an ''Science club tested the pond water and found high phosphate levels''. The neighborhood probably trash got dragged into the water and fertilizer got into the pound make to make it stink.

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The text states that "Within a few months, the water became cloudy and green." This tells us the bad condition the water was in after the house was built. A connection I can make between the neighborhood's actions and the pond's condition is that the fertilizers the neighborhood used caused the pond to be in bad condition.

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In the text it says it rained right after they used fertilizer and then the pond started to become cloudy. That would have to mean that the fertilizers used were harmful to the pond so when it rained, the water carried some of that fertilizer down into the pond.