Which of these is the most characteristic feature of a sedimentary rock?
a) stratification
b) crystallization
c) brightly colors
d) the presence of shells

The Answer for the most characteristic feature of sedimentary rock is A. Stratification

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Answermost of the time it would be ground into fine sediment,and sometimes they are carried away from the original location;