Which of these is a characteristic of index fossils? (7 points) Found in the topmost rock layer
Found in many layers of the same rock
Have already established relative age
Are limited to a particular geographic location

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

here are some of the ways in which chemical and nuclear reactions differ.

explanation: