In detail
Write short answers to the following questions.
1. Why is the Amazon called the world's biggest river?
2. What is the name of the ocean than the Amazon flows into?
3. How long is the Amazon?
4. How did Spanish explorers find the Amazon 500 years ago?
5. How many fish are there in the Amazon?
6. What do piranhas eat?
In focus
Complete the sentences with the correct adjectives.
biggest large sharp deep brown wide longest
1. Piranhas sometimes eat large animals.
2. Piranhas have teeth.
3. The Amazon is a very and very river.
4. Spanish explorers found the Amazon by following the water.
5. The Amazon is not the river in the world, but it is the river in the world.