I'd say look at photos of them from a front, and sideways view :)
Life span, the period of time between the birth and death of an organism.
Answer:
Reverse Adoption theory
Explanation:
According to The Reverse Adoption theory (also known as The Trickle-Up theory), particular styles that began on the streets, among the lower socio-economic class, can get picked up by designers and then those who belong to the upper-class. Since the 1960s, manufacturers and retailers started paying more attention to the people on the street and their styles, looking for inspiration and ideas. Some of those ideas eventually reached the market.
For example, T-shirts were primarily worn by workmen and men in the military as the most practical choice of clothing. They became popular among the working class and eventually in the fashion industry as well. The punk subculture followed a similar path.
It increased government regulation on businesses, because it exposed the meat industry and how disgusting it was. Now, meat has to be regulated by the FDA (food and drug association) before it is given to consumers to ensure that it is safe and good quality.
Answer:
The first one is C and the second one is B.