Question

question 1
0.5 pts
in the eutrophication experiment (with the 7 jars), what was the independent variable?
○ type of jar used
○ pollution source
○ amount of dissolved oxygen
○ amount of water used

Explanation:

The independent variable is the factor manipulated in an experiment. In eutrophication experiments, the pollution source (e.g., different nutrients or contaminants) is typically varied to observe its effect on water quality (like dissolved oxygen levels). The jar type, water amount, and dissolved oxygen are not manipulated; dissolved oxygen is a dependent variable (measured outcome).

Answer:

pollution source