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
Aggregates are people who happen to be in the same place at the same time.
How to solve a distance, time, speed problem using linear algebra
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Embryonic Period
Embryonic Period
A mother invests $9000 in a bank account at the time of her daughter's birth. The interest is ...