easy · Enhanced ACT science
An oceanographer measures the salinity of seawater at different depths.
| Depth (m) | Salinity (parts per thousand) |
| :--- | :--- |
| 0 | 35.1 |
| 50 | 35.4 |
| 100 | 35.7 |
| 150 | 36.0 |
Based on the data below, what is the salinity at a depth of 75 meters?
- 35.70 ppt
- 35.25 ppt
- 35.55 ppt
- 35.40 ppt
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