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
Dictionary entry overview: What does index fossil mean? â¢ INDEX FOSSIL (noun) The noun INDEX FOSSIL has 1 sense: 1. a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found Familiarity information: INDEX FOSSIL used as a noun is very rare.