A. hygrometer
B. hydrometer
C. Secchi disc
D. rain gauge
Correct Answer: Option C
C. Secchi disc
Explanation
The Secchi disc is used to check for the transparency and the turbidity of water.
A. hygrometer
B. hydrometer
C. Secchi disc
D. rain gauge
Correct Answer: Option C
C. Secchi disc
Explanation
The Secchi disc is used to check for the transparency and the turbidity of water.
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