Answer:
Explanation:
The chemical imbalance theory is unproven and often cited as an explanation for mental health conditions. It states that these conditions are caused by an imbalance of neurotransmitters between nerve cells in the brain. For example, depression is said to be a result of having too little serotonin in the brain.
It is possible to get some STIs through a blood transfusion, most commonly aids, however if you are getting the blood transfusion from a hospital or the red cross your chances of getting an STI are next to none because they test all the blood and stuff.<span />
Sperm are produced in the testicles and develop to maturity while traveling from the seminiferous tubules through the epididymis into the vas deferens.
A major life change, i think answer c.
