Multiple Choice
Which form of life first appears in the fossil record approximately 175 million years ago?
6
views
24. History of Life on Earth
The Fossil Record
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Where are fossils most commonly found?
A
On the surface of volcanic lava flows
B
In igneous rock formations
C
In metamorphic rocks
D
In sedimentary rock layers
Verified step by step guidance1
Understand that fossils are the preserved remains or traces of organisms that lived in the past, and they are typically formed under specific conditions.
Recognize that sedimentary rocks are formed from the accumulation and compaction of sediments, such as sand, silt, and clay, which often include organic material from dead organisms.
Learn that the process of fossilization often occurs in sedimentary rock layers because these layers provide the right conditions for preserving organic material, such as low oxygen levels and gradual burial by sediments.
Contrast sedimentary rocks with igneous rocks (formed from cooled magma or lava) and metamorphic rocks (formed under high pressure and temperature), which are less likely to preserve fossils due to their extreme conditions.
Conclude that fossils are most commonly found in sedimentary rock layers because these layers are conducive to the preservation of biological material over time.
Related Videos
Related Practice
The Fossil Record practice set
Problem sets built by lead tutorsExpert video explanations