2. How does the Santa Cruz River bed change as Darwin moves upstream?
(a) from red clay to smooth stones
(b) from stones to marshy sand
(c) from stones to black volcanic rock
(d) from sand and silt to polished granite

3. What animal is a scavenger for hard objects it piles at the entrance to its burrows?
(a) the toucan
(b) the bizcacha
(c) the iguana
(d) the packrat

4. Where do seals and penguins surround the ship and make noises that resemble cattle?
(a) off the coast of Antarctica
(b) the Plata estuary
(c) just of the coast from Rio de Janeiro
(d) headed north from Rio de Janeiro

5. What does Darwin do during his three-day stay in Socego?
(a) climbs trees
(b) go hungry
(c) collects insects within the forest
(d) catch up on his sleep

6. What does Darwin see along the way where robbers hide and cattle can be lost?
(a) many rocky caves
(b) vast expanses of thistles
(c) thick copses
(d) dark hollows

7. What is Darwin's assessment of the natives on Tierra del Fuego?
(a) They are intelligent enough to someday become civilized.
(b) They are an advanced civilization.
(c) They are stupid because of inbreeding.
(d) They are too primitive to civilize.

8. What does Darwin compare to the taste of veal?
(a) llama meat
(b) armadillo meat
(c) lizard meat
(d) puma meat

9. Where does Darwin spend ten weeks at the mouth of the Plata River?
(a) at a British outpost
(b) a camp set up especially for him
(c) a small town named Maldonado
(d) in a Brazilian fort

10. Who takes Darwin and his gaucho companion to a mountain called the Sierra de la Ventana?
(a) a friendly native
(b) a Portuguese priest
(c) a local rancher
(d) a military guide

11. Why is a tree Darwin comes across famous among the natives?
(a) It is revered as an altar to a god called Walleechu.
(b) It bears a medicinal fruit.
(c) It can be seen for miles in any direction.
(d) It is the largest tree in South America.

12. What animal life does Darwin observe on the trail?
(a) a rabbit-like creature called a bizcacha and a small owl
(b) pumas and wolves
(c) mustangs and pheasants
(d) llamas and ostriches

13. What are the only two insects Darwin locates on St. Paul's Rocks?
(a) moths and ants
(b) ticks and fleas
(c) grasshoppers and flies
(d) spiders and parasites brought in on the birds

14. On the way after Monte Video, what surrounds the Beagle?
(a) man eating sharks
(b) a swarm of butterflies and other flying insects
(c) hostile natives in canoes
(d) schools of dolphins

15. Why does sea salt work better than lake salt as a preservative?
(a) Sea salt is more plentiful.
(b) Sea salt contains more sodium chloride.
(c) Sea salt contains other chemicals that aid in preservation.
(d) Sea salt is purer than lake salt.