A 'Trend' is a large social influence if this is what you are talking about. Trends are something where one person does/wears it (usually a popular person everyone likes) and then everyone else starts doing it.
The moons gravity is much less than the earths gravity approximately one sixth. So a 100 kg astronaut weighs 980N on Earth. On the moon, the astronaut would weigh only 162.2N. however, the astronauts mass is 100 kg wherever they are.
Answer:
by decreased dopamine level
