The answer is very small crystals
4, The grain size would be sand, and the rock name would be sand stone.
Answer:
Option D
Fish
Explanation:
The characteristics of index fossil is distinctive, widespread, abundant, and limited in geologic time. Ammonites fit these demands well and are the best-known fossils that have been widely used for this.
Thus, The answer is Fish
The gravity is more at the poles because you are closer to the core
