Final answer:
A population pyramid featuring a Baby Boom and a Baby Boom Echo should display a significant bulge for the post-World War II birthrate and a subsequent smaller bulge representing the increased birth rates of the Baby Boomers' children.
Step-by-step explanation:
To sketch a population pyramid that includes a Baby Boom and a Baby Boom Echo, begin by drawing a vertical axis for age and a horizontal axis for the population size, separated for males and females. The Baby Boom period (1946-1964) should appear as a significant bulge in the population pyramid, with a wide base representing births in those years. As the Baby Boom generation ages, this bulge rises within the pyramid structure. Observing a pyramid from more recent years, you would notice that the bulge is within the higher age brackets, say from age 55 to 75 in 2020.
A Baby Boom Echo, which is seen in this pyramid as another bulge, follows after some time, usually in the birth rates of the children of the Baby Boomers. This echo would be noticeable in the lower age brackets such as the 0-5 age group some years later. It is important to observe the echo might be less pronounced than the original Baby Boom but still visible, representing an increase in birth rates.
The pyramid should reflect the impact of the Baby Boomers transitioning into the older age groups, with the largest population group moving steadily up the pyramid over the years. By 2010, the group would be aged 45 to 65, and by 2030, they would all be 65 and older, comprising the largest elderly age group. Your pyramid should clearly demonstrate these demographic shifts.