Fact 1: Chemical weathering causes iron in rock to oxidize. Fact 2: Iron oxide gives a rusty red color to sedimentary rocks. Given the two facts above, answer the question "What gives a rusty red color to sedimentary rocks?" with the following options: - food coloring - The area was once underwater - chemical weathering - remains of prehistoric life - deoxyribonucleic acid - sea urchins - dirt - earthquakes
chemical weathering