You are walking after dark. a sudden noise frightens you. your heart pounds, your pulse races, and your breathing rate increases. these responses are due to your

Answer is sympathetic nervous system.

Explanation:

Sympathetic nervous system is considered or known to be part of the autonomic nervous system. The other part is parasympathetic nervous system.

The sympathetic nervous system , which originates from the spinal cord , responds to reflex or unconscious actions by accelerating or increasing heart rate and blood pressure.

The responds of the sympathetic nervous system is termed as fight-flight response. This means that, the nervous system triggers the body to respond to event by fighting or running.

It regulates reflex actions.

interphase   is the cell cycle stage in which the cell acquires nutrients, creates and uses proteins and other molecules and starts the process of cell division by replicating the dna. it is the longest stage in the eukaryote cell cycle.

the following   can go wrong during interphase:   a base pair could be mismatched during the duplication process causing a mutation.   correct answer: c

explanation:

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.