a. 2 b. 6 c. 8
a. So that they look different from hippos
b. so they can fly
c. because their eyes are small and weak
a. True b. False
a. They grow and change. b. They grow big flowers.
c. They produce fruit. d. They grow and die every year.
(1)–b; (2)–c; (3)–b; (4)–a