What constitutes a âSolâ cycle in the film âThe Martianâ. While the book uses the term, it does not explain the definition or exact length. Real-life NASA, however, does. One sol = one solar day. Mars Solar Days and 24-hr Clock Convention
Q: Index fossils are used to determine the _____ of the rock. a. age c. color b. makeup d. none of the above A: Index fossils are used to determine the age of the rock. Get an answer
Other index fossils of this type include ammonites, crinoids, rugose corals, brachiopods, bryozoans and mollusks. The USGS offers a more detailed list of invertebrate fossils (with scientific names only) here. Other major index fossils are small or microscopic, part of the floating plankton in the world ocean.