They discovered this since S waves don’t travel through the earth but P waves do. P waves tend to travel faster than S waves in speed, 1&14km/s vs 1&8km/s
Not sure but it might be A or B
Answer:
C) drain cleaner fizzes up as it encounters blockages in a pipe
Explanation:
3 Sig FIgs in 303,000 mm
Any nonzero is a sig fig.
Any zero between two non zeros is a sig fig.
