Answer: The frequency at which new species emerge and are lost over evolutionary time is established by the rates of speciation and extinction.
Im sure its true.. Its depends on when your are talking about though…
Brain or scrotum it’s a endorphin
Drugs/Tobacco.
Alcohol.
Sexual Activity.
Poor Diet.
Behavior that may cause injury.
Sedentary Lifestyle.
It's b because it's that hope I help
