Question

dr. sherman collected two species of algae, chlorella rotunda and tetraselmis cordiformis. he wanted to know whether one species released more oxygen as it grew than the other species. to find out, dr. sherman prepared six culture tanks. he filled each tank with the same amount of a mixture of water and nutrients. then, he added 1,000 live algae cells to each tank and sealed the tank. in three of the tanks, he added c. rotunda cells. in the other three, he added t. cordiformis cells. after five days, dr. sherman measured the amount of oxygen in each culture tank. which of the following was a dependent variable in this experiment? the amount of oxygen in the tanks the species of algae

Explanation:

In an experiment, the dependent variable is what is being measured and is affected by the independent variable. Here, Dr. Sherman is measuring the amount of oxygen in the tanks to see how it is affected by the species of algae. The species of algae is the independent variable that he manipulates.

Answer:

the amount of oxygen in the tanks