Question

which species has reached its carrying capacity first? population (no. of organisms) time (days) 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 species 1 species 2 species 3 species 4 species 3 species 4 species 1 species 2

Explanation:

Step1: Understand carrying - capacity concept

Carrying capacity is the maximum population size of a species that the environment can sustain indefinitely. On a population - time graph, it is indicated by a leveling - off of the population curve.

Step2: Examine each species' curve

Species 4 levels off first among the four species. Species 1 is still increasing, Species 2 levels off later than Species 4, and Species 3 also levels off after Species 4.

Answer:

Species 4