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:
It's practiced in sparsely populated regions because of less things being in the way. This way, they can use irrigation more efficiently.
Gypsum is a chemical sedimentary rock.
I think it is the Biospere
im acully on this qution write know if u look it up someoneelce just asked this quetion thjey have the ansere just read it and ull find it hope this helps mam/sirExplanation: