Merriams kangaroo rats (Dipodomys merriami) live in North

Chapter 44, Problem 44.28

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Merriams kangaroo rats (Dipodomys merriami) live in North American habitats ranging from moist, cool woodlands to hot deserts. Assuming that natural selection has resulted in differences in water conservation between D. merriami populations, propose a hypothesis concerning the relative rates of evaporative water loss by populations that live in moist versus dry environments. Using a humidity sensor to detect evaporative water loss by kangaroo rats, how could you test your hypothesis?

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