Ocean Acidification Experimental Design
To investigate ocean acidification, a student set up two aquariums with seawater and marine organisms. One aquarium received injected CO2, while the other served as a control. After several weeks, no significant difference in the health of the organisms was observed, contrary to the student’s hypothesis. Which of the following identifies a likely conceptual flaw in the experiment?
The duration of the experiment was too short to observe the gradual effects of ocean acidification on marine life health.
The marine life used in the experiment was of species that are particularly resilient to changes in pH, masking the effects of acidification.
The amount of CO2 injected was too low to significantly change the pH of the seawater in the experimental aquarium.
The student did not account for the buffering capacity of seawater, which can neutralize small amounts of added CO2, preventing immediate acidification.
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