Consider the demographics for two countries one with a low income almost impoverished population they other an economically well off country. What factors listed would contribute to the decline in birth rate and larger +75 population in the high income country? Check all the might apply

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.