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.
Answer:
Question 17: B: They may provide evidence that Pennsylvania was once covered by warm ocean waters since most corals are presently found in these environments.
Question 14: I think the answer for this question might be A. But I'm not sure.
Question 10: D: Plates move toward each other and volcanic mountains form.
C. marine! this is your answer. hope this helps!
Introducing different kinds of crops to eliminate the cause of the fungal disease is the best solution that scientists have found to solve this. They have set-up seed vaults that store different kinds of seeds to help ensure the continuity of the types of crops that have been planted for the consumption of many.
These reactions are called ionic reactions.
In an ionic reaction there is an exchange of ions between two atoms or molecules.