The answer would be d: the doldrums around the equator
You need at least 3. seismic stations provide only a circle around the station. so from geometry 3 circles intersect in a point. that is why you need 3 stations
Answer:
3.) Pumice
Explanation:
"Pumice is widely used as an abrasive in soaps and cleaners. It is considered one of the softest abrasives on earth."
Answer:
option D. An invasive, fast growing vine native to Japan.
hope it helps! :)