An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?
A. Type of plant, amount of music, and sunlight
B. Water, apple juice, milk
C. Plant growth
Select your answer:
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Is this food is good for our teeth? Why?
A. Yes, because is is delicious, sweet and cool
B. No, because it can cause germs multiply and decay our teeth
Cell & Bond › View
Which of the following lung volumes or capacities can be measured by spirometry?
A. Functional residual capacity (FRC)
B. Physiologic dead space
C. Total lung capacity (TLC)
D. Vital capacity (VC)