Question 1: Where does the Río Negro originate?
- Colombia
- Venezuela
- Brazil
Correct Answer: Colombia
Fact: The Río Negro originates in the highlands of Colombia and gradually gains volume as it flows south into Brazil. At about 1,400 miles in length, it is the world's largest blackwater river, with water stained dark by organic matter from surrounding swamps.
Question 2: Which river does the Río Negro flow into?
- Nile
- Amazon
- Mississippi
Correct Answer: Amazon
Fact: The Río Negro is one of the largest tributaries of the Amazon, joining the Solimões River at the Encontro das Águas, or Meeting of the Waters, in Manaus, Brazil. The rivers, the blackwater Río Negro and sandy-colored Solimões River, run side by side for more than 3 miles before merging to become the Lower Amazon.
Question 3: Which of these carnivorous mammals will you find in the Amazon River?
- Giant otter
- Ladoga ringed seal
- Walrus
Correct Answer: Giant otter
Fact: Found only in the Amazon, Orinoco, and La Plata river systems, the giant otter measures up to 6 feet in length. Due to excessive hunting, its population is endangered.