Answer:
The sympathetic nervous system originates in the spinal cord and its main function is to activate the physiological changes that occur during the fight-or-flight response. This component of the autonomic nervous system utilises and activates the release of norepinephrine in the reaction.
An advantage of using models to represent the carbon cycle is: B. show a complete and detailed account of every event in the cycle.
A carbon cycle refers to the series of biogeochemical processes through which carbon atoms or carbon compounds are interconverted and used by living organisms within an environment, especially by transporting carbon from the atmosphere to planet Earth and then back to the atmosphere.
Basically, there are four (4) main processes that are associated with carbon cycle and these include:
- Combustion such as burning of fossil fuels.
A model can be used to graphically illustrate or simulate the all of the activities (events) that are taking place within the carbon cycle.
Hence, an advantage of using models to represent the carbon cycle is that it would illustrate (show) a complete and detailed account of every event in the cycle.
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