Question

using science skills a scientist conducted an experiment to determine the effect of environment on the color of fur of a himalayan rabbit. the himalayan rabbit typically has a white coat except for its colder nose, feet, tail, and ears, which are black. the scientist shaved an area of hair on the back of each rabbit, then placed an ice - pack over the shaved area on one rabbit (a). figure 1 - 1 25. interpreting graphics in figure 1 - 1, which rabbit is the control? a. rabbit a c. rabbit c b. rabbit b d. they are all variables 26. interpreting graphics in figure 1 - 1, what is the independent variable in this experiment? a) rabbit b c. the ice b. rabbit c d. they are all controls 27. formulating hypotheses before completing the experiment in figure 1 - 1, the scientist made a hypothesis. what is the hypothesis she is testing? if the ____________ is __________ then the __________ will ____________. 28. applying concepts why is rabbit b essential to this experiment?

Explanation:

1. In an experiment, the control is the group not exposed to the experimental treatment. Rabbit B has no ice - pack treatment, so it is the control.
2. The independent variable is the factor that is deliberately changed in an experiment. Here, the ice (application of cold) is what the scientist is changing, so the ice is the independent variable.
3. The scientist is testing the effect of environment (cold from the ice - pack) on the color of fur. A possible hypothesis could be: If the environment (temperature) is cold, then the fur color in the shaved area will change to black.
4. Rabbit B is essential as it serves as a control. It provides a baseline to compare the effects of the ice - pack (experimental treatment) on Rabbit A. Without a control, it would be impossible to determine if any changes in Rabbit A are due to the ice - pack or other factors.

Answer:

1. B. Rabbit B
2. C. The ice
3. If the environment (temperature) is cold, then the fur color in the shaved area will change to black.
4. It serves as a control to compare the effects of the ice - pack treatment on Rabbit A.