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Dora thinks that there are more frogs in the pond by her house when the water temperature is higher. She is making a chart to use as she gathers data to see whether she is correct.
What data should Dora record on her chart?
a. time, air temperature, water temperature
b. date, time, air temperature, number of frogs
c. date, time, water temperature, number of frogs
d. date, air temperature, wind speed, number of frogs
Answer A is incorrect because it does not include the number of frogs.
Answer B is incorrect because it does not include the water temperature.
Answer C is correct because all of the information she needs to decide if there are more frogs when the temperature is higher is included in this answer.
Answer D is incorrect because it does not include the water temperature.