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
An index fossil, also called a guide and zone fossil, is used quite often to determine the age of the rock layer in which the fossil is found. An index fossil is particularly useful for this because it is the remains of an organism that lived for only a brief period of known time (geologic period), and usually over a wide area.