The purpose of this study was to determine the negative effects of triclosan - an antibacterial chemical commonly found in soap - on marine crustaceans. To do this, lobsters were exposed to one of four treatments: 1) 5 ml triclosan mixed into seawater, 2) 15 ml triclosan mixed into seawater, 3) 25 ml triclosan mixed into seawater, and 4) seawater only (no chemicals added). Lobster swimming speed was measured 24 hours following treatment exposure.
Use the above information to match the components of the experiment to the correct vocabulary below.
Each vocab word will be used once or not at all.
Triclosan will alter lobster swimming speed
Lobster swimming speed
Water in the 5 ml triclosan tanks was 2 degrees Celsius cooler than water in the other tanks
Type of scientific study conducted
Triclosan will negatively impact lobster fitness
0 ml triclosan treatment
Triclosan concentration
1. Independent variable
2. Dependent variable
3. Control treatment
4. Confounding factor
5. Manipulative experiment
6. Observational study
7. Replicate
8. Null hypothesis
9. Alternative hypothesis
10. Study hypothesis
Answers: 3
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