Clasts Layer A
Layer B
Layer C
Fossils
Layer D
15. Based on the law of superposition, which layer of sedimentary rock is
the oldest?
O A. Layer C
O B. Layer B
O C. Layer D
O D. Layer A

Which of the following is not considered one of the four major oceans (1 point)

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Sink holes may eventually for to join a. wide valleys b. zone of aeration c. dripstones d. aquifer