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Based on the table, which of these conclusions is correct?

A. Fish need 10 mL of water purifier to survive.
B. Fish tanks with purifier become cloudy in heated water.
C. Water purifier can help a fish survive longer.
D. Water purifier keeps fish tanks clearer for longer.

\[
\begin{tabular}{|c|c|c|}
\hline Week & Water Purity of Tank 1 & Water Purity of Tank 2 \\
\hline 1 & 12.6 & 12.6 \\
\hline 2 & 16.0 & 13.9 \\
\hline 3 & 17.2 & 14.4 \\
\hline 4 & 18.7 & 15.8 \\
\hline 5 & 19.6 & 17.6 \\
\hline
\end{tabular}

Sagot :

GinnyAnsweridn
Let's analyze the provided data step-by-step to determine the correct conclusion.

We have two fish tanks, Tank 1 and Tank 2, both treated with 10 mL of water purifier:
- Tank 1 was heated to [tex]$88^{\circ}F$[/tex].
- Tank 2 was kept at room temperature.

The water purity levels, measured in particles per liter over 5 weeks, are as follows:

| Week | Water Purity of Tank 1 | Water Purity of Tank 2 |
|------|-------------------------|-------------------------|
| 1 | 12.6 | 12.6 |
| 2 | 16.0 | 13.9 |
| 3 | 17.2 | 14.4 |
| 4 | 18.7 | 15.8 |
| 5 | 19.6 | 17.6 |

Step-by-Step Analysis:

1. Initial Purity (Week 1):
- Both tanks start with the same water purity of 12.6 particles per liter.

2. Second Week Purity:
- Tank 1: 16.0 particles per liter
- Tank 2: 13.9 particles per liter

3. Third Week Purity:
- Tank 1: 17.2 particles per liter
- Tank 2: 14.4 particles per liter

4. Fourth Week Purity:
- Tank 1: 18.7 particles per liter
- Tank 2: 15.8 particles per liter

5. Fifth Week Purity:
- Tank 1: 19.6 particles per liter
- Tank 2: 17.6 particles per liter

Observation:

- The water purity in both tanks shows an increase over the five weeks, indicating the effects of the water purifier.
- However, the increase in water purity in Tank 1 (heated to [tex]$88^{\circ} F$[/tex]) is more pronounced than in Tank 2 kept at room temperature.

Conclusions Based on Data:

1. "Fish need 10 mL of water purifier to survive."
- The provided data does not give any information about fish survival, only water purity.

2. "Fish tanks with purifier become cloudy in heated water."
- The data indicates increased water purity (i.e., it becomes clearer, not cloudier) in the heated tank.

3. "Water purifier can help a fish survive longer."
- The data does not provide direct evidence on fish survival, only effects on water purity.

4. "Water purifier keeps fish tanks clearer for longer."
- This conclusion aligns well with our observations. Both tanks show increased water purity, but Tank 1 (heated) shows a more significant increase, suggesting that the water purifier is effective at maintaining clarity for a longer period.

Correct Conclusion:
Water purifier keeps fish tanks clearer for longer.
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