Dinosaurs became extinct hundreds of millions of years ago. Scientists have been trying to determine the cause of the extinction
. There have been many different claims about how dinosaurs disappeared. Which best explains why there could be more than one claim about the disappearance of the dinosaurs? All the claims can be validated through experimentation. Data results can be interpreted in different ways. Political groups have influence on what scientists say. The different scientists are not experts in the field.
The sympathetic nervous system activates what is often termed the fight or flight response. ... In response to this stimulus, postganglionic neurons principally release noradrenaline (norepinephrine). Prolonged activation can elicit the release of adrenaline from the adrenal medulla.
