Turning in at her street, Dominique saw six fire trucks in front of her apartment building. Her heart beat wildly until someone yelled, "Just a false alarm." Her pulse then began to return to normal, due to the action of her nervous system.

Parasympathetic is the correct answer.

Explanation:

her heart began to return normal because of the action of her Parasympathetic nervous system because the Parasympathetic nervous system's role is to conserve energy because it decreases the heart rate and respiration.

The Parasympathetic nervous system is responsible for the digestion response when the body is in the state of relaxing, feeding,resting, and body rest, and it also regulates urination, digestion, sexual arousal, and defecation.

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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bioteacher101