Asked by anonymous

Tom wanted to test his hypothesis that plants grow better at room temperature than in cold temperatures. He placed an ivy plant in the refrigerator, which had no light source.He also placed a spider plant in the window in his room.
b. What were Tom's controls?
Is it the refrigerator and window?
Answered by alex
refrigerator and window
Answered by Lucy
This did not help me , sorry but I need more help !
Answered by Anonymous
Refrigerator and Window because they're the one experimental controls.
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