<span>"The phrenic nerve is a nerve that originates in the neck and passes down between the lung and heart to reach the diaphragm"
The answer therefore is the Phrenic nerve.
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new environment, and spices are formed
Density-dependent limiting factors cause a population's per capita growth rate to change—typically, to drop—with increasing population density. ... Density-independent factors affect per capita growth rate independent of population density. Examples include natural disasters like forest fires.