Answer: Atacama Desert, Andes Mountains, and Amazon Rainforest.
Explanation: The Nile River is located in Africa, which isn't South America, so that's not the answer. The Gobi Desert is a desert in Asia, so that also isn't the answer. The Atacama Desert, Andes Mountains, and Amazon Rainforest are all correctly associated with the continent of South America.
Let me know if it's right! :)