Question

PLEASEEEEEEEE HELP 15 POINTS PLEAASSEEEE

Your class is studying rocks from the Cretaceous and Paleogene Periods. You have been given three rocks to study, each of which contains fossils of organisms known as foraminifera. Foraminifera are tiny, single- celled organisms with shells. In addition, each of the rocks includes a layer that contains large amounts of iridium. The iridium layer marks the boundary between Cretaceous and Paleogene. These iridium-rich layers are marked in blue.


Which of the choices A-D shows fossils correctly ordered from oldest to youngest?


A. Fossil Group A B. Fossil Group B C. Fossil Group C D. Fossil Group D

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Which of the following fossils are you most likely to find in Layer X in Rock #3?


A. Fossil A B. Fossil B C. Fossil C D. Fossil D

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Which of the following conclusions is supported by the scientific evidence your class examined?

A. Rock #2 includes the oldest rock strata your class examined.

B. Rock #1 includes only rock strata from the Paleogene Period.

C. Rock #3 includes only rock strata from the Cretaceous Period.

D. Rock #1 includes the oldest rock strata your class examined.

Answer 1

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Step-by-step explanation:

The law of superposition states that rock strata (layers) farthest from the ground surface are the oldest (formed first) and rock strata (layers) closest to the ground surface are the youngest (formed most recently). A fossil is the remains or traces of plants and animals that lived long ago.

Animal remains are most likely to be fossilized if their hard parts are covered by layers of sediments soon after death. With time and pressure, these sediments, such as sand, plant debris, or ash, become compressed into rock. Therefore, fossils are found in sedimentary rock, like sandstone, shale, limestone and coal.

i dont know the last one