Question

question 15 of 16
a: estimated and projected world population according to different scenarios
b: projected population change between 2000 and 2100 (medium variant)
karr, scientific american: environmental science for a changing world, 4e, © 2021 w. h. freeman and company
what are the population projections for each fertility variant in 2050?
o constant fertility variant: 22 billion; high fertility variant: 15 billion; medium fertility variant: 10 billion; low fertility variant: 7 billion
o constant fertility variant: 14 billion; high fertility variant: 15 billion; medium fertility variant: 11 billion; low fertility variant: 8 billion
o constant fertility variant: 13 billion; high fertility variant: 12 billion; medium fertility variant: 10 billion; low fertility variant: 9 billion
o constant fertility variant: 10 billion; high fertility variant: 10 billion; medium fertility variant: 9 billion; low fertility variant: 8 billion

Explanation:

Step1: Locate 2050 on x - axis

Find the year 2050 on the horizontal axis of the left - hand graph.

Step2: Read population values for each variant

Read the population size values for the constant, high, medium and low fertility variants at the year 2050 from the graph. The constant fertility variant shows a population of about 14 billion, the high fertility variant about 15 billion, the medium fertility variant about 11 billion and the low fertility variant about 8 billion.

Answer:

constant fertility variant: 14 billion; high fertility variant: 15 billion; medium fertility variant: 11 billion; low fertility variant: 8 billion