Question

3a. in what type of rock are nyasasaurus parringtoni and other fossils most commonly found?
a sedimentary rock
b. igneous rock
c. metamorphic rock
d. fossil rock
read the passage - dinosaurs - and answer the question below:
3b. some rocks contain fossils, which provide clues to the past. how was a rock containir
fossils most likely formed?
a through the process of heating and cooling
b. through the process of sedimentation
c. through the process of volcanic activity
d. through the process of magma cooling
read the passage - geologic cross section - and answer the question below:
geologic cross section
grade 8 science: unit 1 - ho
th changing? sy 24 - 25 (copy 2)

Explanation:

Sedimentary rocks are formed through sedimentation. They often contain fossils because the processes that form them (like layers of sediment building up over time, which can trap organisms) are conducive to fossil preservation. Igneous rocks form from cooling magma or lava (processes of heating and cooling, volcanic activity, magma cooling - options A, C, D for 3B) which would destroy most fossils. There is no such category as "Fossil rock" as a main rock type (disregard option D for 3A).

Answer:

3A. A. Sedimentary rock
3B. B. Through the process of sedimentation