Question

different temperatures.
what is the outcome variable (dependent variable) in this experiment?
the number of crocuses used
the air temperature
the greenhouses
the amount of time it takes the crocuses to bloom

Explanation:

In an experiment, the dependent variable (outcome variable) is what is measured. Here, the time for crocuses to bloom is measured, while the number of crocuses, air temperature, and greenhouses are either constants or independent variables.

Answer:

the amount of time it takes the crocuses to bloom