To test the hypothesis that plants grow faster in green light, a student set up 3 of the same type of plants. She placed the first plant under a green light, the second plant under a regular light bulb, and the third plant under a red light.

All of the following are the constants in the above experiment except __________.
amount of water
plant type
light color
pot size

Question

To test the hypothesis that plants grow faster in green light, a student set up 3 of the same type of plants. She placed the first plant under a green light, the second plant under a regular light bulb, and the third plant under a red light.

All of the following are the constants in the above experiment except __________.
amount of water
plant type
light color
pot size

anonymous · Answer

https://answers.yahoo.com/question/index?qid=20080707135055AARTjJT http://science.blurtit.com/3438125/to-test-the-hypothesis-that-plants-grow-faster-in-green-light-a-student-set-up-3-of-the

anonymous · Answer

B) light color is the independent variable.

anonymous · Answer

The single factor that is changed in an experiment is the __________.
dependent variable
control
hypothesis
independent variable