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
Index fossils are used to identify layers of rocks. The layers form a sequence that relates to their age. In other words, a certain layer will contain fossils that are unique to that layer. Geologists have slowly, using different methods been able to determine the age of the rock layers. Once the age of the rock is known then the age of the fossil in that layer is known. This enables Geologist to use index fossils to date a certain layer where ever it occurs.