Complete the sentences by choosing the right option:

Amazon is a large river in the world. Near its mouth................

Since Amazon washes off the load supplied to it from the catchment, sediments do not deposit at the mouth. The Amazon basin is the largest tropical rainforest in the world. Most of it has dense tropical rainforests which are largely inaccessible because of frequent flooding and dense undergrowth. They are often called “lungs of the world” as they provide extensive ecological services for the planet.