1. The accompanying photo, which was taken in a national park, shows the Hetch Hetchy Reservoir, a lake formed by a dam on the
a. Merced River
b. Tioga River
c. Tuolumne River
d. American River
2. There are 58 units in the National Park System that have been designated National Park. How many of these 58 National Parks have the word “River” as part of their name?