Question

more experimental design practice
cockroaches are exposed to a pesticide. after 3 hours, 95% of the insects are dead.
the independent variable is
the dependent variable is

Explanation:

The independent variable is the factor manipulated in an experiment. Here, the pesticide exposure is the manipulated factor. The dependent variable is the outcome measured; here, it is the cockroaches' survival/death rate.

Answer:

The independent variable is pesticide exposure.
The dependent variable is cockroach mortality rate.