The spinal cord is made up of bundles of nerve fibers.
The geologic time scale is a system of chronological dating that relates geological strata to time, and is used by geologists, paleontologist, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history. Hope I helped!
Answer:
because stagnat water contains bacteria and it is the breeding place of mosquitoes
DNA provides information at the species level.
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