Answer: Their relationships may be angry and unpredictable, and they are likely to have few long-term friendships. They may be aloof in personal relationships and appear lonely.
Explanation:
Dopamine and serotonin are both brain chemical signaling molecules.
The answer is stainless steel
Katrina learned about curling by watching and focusing on the techniques used by the olympic players. By watching so much, she learned the movements and basic rules of the game. This is an example of visual learning which is also cognitive learning :-)