This is for school, please answer?

Question

What do you know about the following south american landmarks?

1. Lake Titicaca

2. Andes Mountains

3. Amazon River

4. Guiana Highlands

Or you could tell me where to find these facts, I've checked Wikipedia, What else might help me?

Answer 1

glacial lake (the deepest in south america)

glacial mountains&vulcanic (ojos del salado,cotopaxi)

it comes from the peruan andes but the most its tropical forest

field( jungle)

Answer 2

Google National Geographic with these titles.  Should have several articles on each if I remember correctly.

Answer 3

Haven't you found enough on Wikipedia ?

Go also to British Encyclopedia.