Question

In states along the Gulf of Mexico, fossilized seashells from millions of years ago are often found on land many kilometers from the shore. These fossils are evidence that
A.
the Gulf shoreline's location has not changed.
B.
the Gulf shoreline was farther out to sea in the past.
C.
the Gulf shoreline was farther inland in the past.
D.
seashells are formed by land creatures.

Answer 1

The presence of fossilized seashells on land, far from the current Gulf shoreline, is evidence that **B. the Gulf shoreline was farther out to sea in the past.** This indicates that the area where the shells are found was once underwater, supporting the interpretation of historical changes in sea levels and shorelines over millions of years.