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Keisha observes goldfish in an outdoor pond. The goldfish seem to be more active when the weather is warm than when it is cold. She asks herself, “How do temperature changes affect goldfish?”
7. If she were to do an experiment, which of the following would be the best hypothesis to test?
a) Do goldfish like warm or cold water?
b) If Goldfish are placed in warm water then they will be more active than if placed in cold water.
c) Goldfish live in both warm and cold water.
d) Temperature changes kill goldfish
B