Evolution Quick Check 3 of 53 of 5 Items Question What do red lines in rocks indicate about the biosphere?(1 point) Responses Volcanic action has damaged the biosphere. Volcanic action has damaged the biosphere. Continental drift affected the biosphere. Continental drift affected the biosphere. Oxygen is being produced by the biosphere. Oxygen is being produced by the biosphere. Carbon dioxide is being produced by the biosphere. Carbon dioxide is being produced by the biosphere. Skip to navigation page 6 of 6

Answer 1

None of the above. Red lines in rocks indicate the presence of iron oxide, which may have been formed due to oxidation of iron-rich minerals in the rocks. This does not necessarily indicate anything specific about the biosphere.