How do paleontologists deal with the incomplete nature of the fossil record to establish a geologic history of biodiversity changes?
What will be an ideal response?
Because the incomplete nature of the fossil record could lead to the absence of fossils of species that were present at a given time, paleontologists measure diversity changes by measuring the changes in diversity at higher taxonomic levels, such as changes in the number of families. The higher taxonomic levels should be less affected by the abundance of sedimentary rocks at a given time. Additionally, higher taxonomic levels are more stable and less likely to go extinct. For example, the extinction of a family requires extinction of all the genera within that family and every species within each of those genera. Therefore, it is more difficult for families to go extinct than it is for genera to go extinct, and it is more difficult for genera to go extinct than it is for species to go extinct.
You might also like to view...
Suppose the temperature is constant in the lowest 1000 metres of the atmosphere. How good would the conditions be for viewing a mirage?
A. poor B. average C. good D. excellent
What is the approximate population of Australia?
A) 24 million B) 13 million C) 5 million D) 33 million E) 15 million
Areas near oceans have ________ than areas in the interior of continents because of the great storage capacity of water
A) cooler winters, warmer summers B) warmer winters, cooler summers C) warmer winters, warmer summers D) cooler winters, cooler summers
Evaluate the validity of the idea that Earth is "The Goldilocks Planet" in the solar system. Support your position with three points
What will be an ideal response?