Question

40points. please do the following two questions .please do enough for for the points ,I don't want short answers , I want long answers for 5marks.

Answer 1

Answer:

Evaporation is a surface phenomenon because, during evaporation, the molecules with higher kinetic energy dissipate into the air from the topmost layer of the liquid so it is a surface phenomenon.

Answer 2

Answer:

Demographic dividend, as defined by the United Nations Population Fund, is "the economic growth potential that can result from shifts in a population’s age structure, mainly when the share of the working-age population is larger than the non-working-age share of the population".