Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.
Explanation:
Geological time starts with Precambrian time.
Geologically, time is divided between the Precambrian era and present time into era.
The three eras are Paleozoic era, Triassic period and Cenozoic era.
Era is further divided into periods.
Scientists use radio carbon dating to study fossils and rock formation. With this study they were able to divide them in exact geological scale.
Geologic scale is the record of events in earth's history and evolution.
DNA and RNA both produce proteins, but RNA copies itself and moves out of the nucleus while DNA stays inside the nucleus and produces proteins. Also DNA helps more in cell division, while RNA helps in making proteins.
Synaptic preganglionic fibers can follow 3 (three) different routes after entering the sympathetic synaptic chain.
<h3>What are synaptic preganglionic fibers?</h3>
Synaptic preganglionic fibers are fibers of the autonomic nervous system that form the paravertebral sympathetic chain ganglia.
The synaptic preganglionic fibers also form the prevertebral ganglia and enters into the sympathetic synaptic chain.
In conclusion, Synaptic preganglionic fibers can follow 3 (three) different routes after entering the sympathetic synaptic chain.
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