I believe the correct answer is A) Silurian period occurred before the Neogene era, because the other answer are wrong.
Hadean eon ended before Silurian period.
Mesozoic and Permian era were after Silurian period.
Answer:
Mars has mountains, valleys, and volcanoes, but the red planet's are by far the biggest and most dramatic.Recent and continuing missions to Mars are showing that the Red Planet may be more geologically active than previously thought.Olympus Mons, the solar system's largest volcano, towers some 16 miles above the Martian surface, making it three times taller than Everest.Geologists think one of the reasons volcanoes on Mars were able to grow so large is that Mars has fewer tectonic boundaries in comparison to Earth.
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A single fundamental similarity and or unity among all living organisms, is that all living organisms are composed of the basic units is life known as cells.
Weathering and erosion ( they caused water and wind action)