(Solved): Question 1 1 pts The presence of harmful algal blooms in a nearby lake has increased dramatically si ...

Question 1 1 pts The presence of harmful algal blooms in a nearby lake has increased dramatically since the installation of a pipe that drains warm water from a wastewater treatment facility. Scientists decide to test the hypothesis that the algal blooms are related to the increased temperatures. They sample lake water from different areas of the lake, incubate them at different temperatures, and will measure the level of harmful algae in the samples. In this example, temperature is a/an....

dependent variable

controlled variable

independent variable

uninnown variable