Final answer:
The Yungas Valley in Bolivia is formed by the meeting of the Andes Mountains and the Amazon Rainforest.
Step-by-step explanation:
The Yungas Valley in Bolivia is formed by the meeting of two major geographical things - the Andes Mountains and the Amazon Rainforest. The Andes Mountains form a part of the longest mountain range in the world, stretching along the western edge of South America. The Amazon Rainforest, also known as the Amazon Basin, is a vast tropical rainforest that covers most of the northern part of South America.
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