The following are the answers:
a. porous and permeable beds bounded on all sides by impermeable rock.
c. structural traps.
The four types of galaxies are spiral, barred spiral, elliptical, and irregular <span />
Answer:
A
Explanation:
Subsequent boundaries are boundaries that were there before a place was established.
Example: Berlin and the wall of Berlin.
Hope this helps :)
Answer:
Timeliness
Explanation:
since it means occurring at a favorable or useful time.
