Answer:
The answer is B, cause rocks to break and move.
Explanation:
Both are under the phylum annelida
Polychaeta are more numerous than oligochaeta
Example of polychaeta is sand worm
While oligochaeta is earth worm
Both are free living organisms
From the information given, i can't give you an actual number. But I can tell you that if a rock has a high porosity (its very porous which means that liquids can easily pass through) and has high permeablilty (liquids are able to enter the rock with ease), then groundwater could flow through this rock easily and faster than a rock that has a low porosity and low permeability.
