False they don't have to be clearly just has long as you have them so my teacher says!
Answer: You can consult:
“Mechanical” bridge means a manufactured device designed to seal the well bore or inside diameter of various sizes of casing that may be used as a base for approved plugging material.
Explanation:
I'm not sure but hope it helps.
St. Helen was the most , what kind of volcanic eruption was that?
Think: a. Plinian
Korea Divided at 38th Parallel” “Hungarian Revolution Crushed”
“Missile Sites Spotted in Cuba”
The events in these headlines contributed to the COLD WAR.
the answer is A. Hope I could help