I would say b. c. & d. because the question is asking how to stay safe before, not during.
Answer
If Richard’s friend jumps in front of him and scares him, Richard’s sympathetic nervous system will take over and his parasympathetic nervous system will have a lesser role.
Explanation
The sympathetic nervous system is responsible for the activation of the flight/fight response. The extensive network of neurons regulates the involuntary processes of the body. Through the autonomic nervous system actions that occur without voluntary control are mediated. For example heart rate. The sympathetic and parasympathetic nervous systems complement each other will working.
Answer:
**nuclear fusion**
So creating a brand new element requires loading an atom's nucleus with more protons. Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion. First, stars fuse hydrogen atoms into helium.
Codependency is the correct answer, hope this helps
