What is an index fossil?
A) An organism that existed for a vast period of time and is representative of an era
B) An organisms that is restricted to one small, geographic setting
C) A trace fossil that defines a colony of organisms
D) An organism that was geographically widespread but limited to a short span of geologic time
Question 2
________ was the English engineer and canal builder who observed that sedimentary strata in widely separated areas could be identified by their distinctive fossil assemblages.
A) Isaac Newton
B) William Smith
C) Charles Lyell
D) Charles Darwin
A fossil trilobite.
Attention and memory are in demand during circle time.
The Importance in the World Fossil Fuel Economy
A clock is showing the time as exactly 3:00 p.m. and 25 s.
The TaqMan approach to quantitative real-time PCR (qPCR)
Genomic and fossil evidence has been used to estimate the times of divergence of human and Neanderth