Question

the graph shows three different projections of human population growth.
which colored line on the graph shows the population reaching, but not surpassing, carrying capacity?
a. line b
b. line d
c. line c
d. line a

Explanation:

Carrying capacity is the maximum number of individuals that an environment can support. In population - growth graphs, when a population reaches carrying capacity, its growth rate slows down and stabilizes. Line C shows a population that first increases and then levels off (stabilizes), which is characteristic of a population reaching its carrying capacity. Line A shows exponential - like growth without any indication of leveling off (suggesting it would surpass carrying capacity if it were the case). Line B shows a decrease after some growth, but it's not a typical pattern of just reaching carrying capacity. Line D shows a continuous increase (actual population growth which, in the context of projections, is more of a J - shaped curve before considering limits).

Answer:

C. Line C