Asked by Anonymous

Two students were testing the amount of fertilizer that would best promote the growth of tomato plants in a garden. Which of the following could be an unavoidable source of experimental error?

Select one:
a. variation of tomato plants
b. amount of water given to the plants
c. time given to the experiment
d. fertilization during the experiment

Answers

Answered by PsyDAG
Think of it this way. Over which source would the experimenter have the least control?
Answered by alexa
a. variation of the tomato plants
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