I would have to say it would have been the 30 because thats when the moon is closet to the earth so people would be able to see the eclipse better
From Top to bottom: C, B, D, A. That's the correct matchups (:
Mountain building, weathering, and erosion eventually expose the fossil at the surface. Sedimentary rock is the type of rock that is made of hardened sediment. Most fossils form from animals or plants that once lived in or near quiet water such as swamps, lakes, or shallow seas where sediments build up.
The seismic focus is the point in the earth's crust where an earthquake originates from.