In its report to Congress in 1990, the U.S. Fish and Wildlife Service estimated that more than _____ of all the wetlands in the lower 48 states had been destroyed.
a. 75
b. 50
c. 80
d. 25
Question 2
To survive winter well, waterfowl must _____ on their long flight south, along with having adequate wintering areas.
a. have plenty of space in which to fly
b. fly with family groups to give protection
c. fly within a quarter mile of a river
d. have enough resting areas at which to stop