Question

1. what do the levels (bottom to top) and sides (left and right) of these population pyramids represent? a) poverty and education b) age and sex c) income and jobs d) immigration and emigration 21. which pressure is most likely if a population has a large elderly population with an increased life expectancy? a) greater demand on healthcare and medical systems b) rapid increase of emigration to warmer climates c) decline in food production because elderly people consume less d) there would be no negative pressures on the population 22. which line on the graph shows population increasing rapidly with no leveling off? a) a, s - shaped (logistic) b) b, j - shaped (exponential) c) a, u - shaped (logistic) d) b, straight line (exponential) 23. which line on the graph shows a population that grows slowly and then levels off? a) a, s - shaped (logistic) b) b, j - shaped (exponential) c) a, u - shaped (logistic) d) b, straight line (exponential) 24. during the rise of the human population throughout history, which of the following reasons would explain our exponential growth? \one of the curves represents and resembles this type of growth.\ a) frequent natural disasters reducing life expectancy b) continuation of hunter - gatherer societies across the world c) advancements in technology, industry, medicine and agriculture d) increased competition for limited resources among warring countries

Explanation:

For question 20, population pyramids have age on the vertical axis (bottom - top) and sex on the horizontal axis (left - right). For question 21, a large elderly population with increased life - expectancy leads to a greater demand on healthcare and medical systems. For question 22, a J - shaped (exponential) curve shows a population increasing rapidly with no leveling off. For question 23, an S - shaped (logistic) curve shows a population that grows slowly and then levels off. For question 24, advancements in technology, industry, medicine and agriculture explain the exponential growth of the human population.

Answer:

1. b) Age and Sex
2. a) Greater demand on healthcare and medical systems
3. b) B, J - shaped (exponential)
4. a) A, S - shaped (logistic)
5. c) Advancements in technology, industry, medicine and agriculture