Answer:
Index fossils, intrustions and cross-cutting relationships.
Explanation:
The correct list of three different geologic features that help scientists determine the relative ages of rocks by their position is "index fossils, intrusions, and cross-cutting relationships".
Answer:
(1) Less
Explanation:
Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
D. is the correct answer.
