On the map, find the X that shows where the places are located. Click on the name of a place. Click again on the X corresponding to its correct location. Atacama desert, Andes, Suriname, Brazil, Chile, Amazon Basin, Patagonia, Lake Titicaca and Peru.

Why is the huronian supergroup rock formation particularly interesting to scientists? because it looks like a cross-section of a giant, stone encyclopedia because it formed during the period when oxygen began to accumulate in the atmosphere because it contains unusually large amounts of oxygen and sulfur because it dramatically altered the planet's development when it first formed