2. One species of Amazon piranha usually does not kill its prey, instead biting off and feeding on the _________ of other fish.
A.Fins
B.Tails
C.Gills
D.Parasites

3. Because of its hunting habit of jumping out of the water, the arowana earned the nickname, _________.
A.''Water monkey''
B.''Water spring''
C.''River frog''
D.''Sea monkey''

5. What is the staple crop that Caboclos plant after the floodwaters recede?
A.Corn
B.Manioc
C.Potatoes
D.Onions