The appearance of banded iron layers in the rock record between 1.08 and 3.8 billion years ago reflect the alteration of oxygen-rich and oxygen-poor conditions in the ocean at that time. true or false

In wegener’s evidence for continental drift, continents were proposed to fit together, such as the east coast of south america with the west coast of europe. east coast of africa. west coast of greenland. lower west coast of africa.

What is the name for the famous "ring" of volcanos? a. ring of flames b. ring of fire c. ring of lava d. ring of death

How has plate tectonics affected the climate of south america?