Question

which species has not reached its carrying capacity yet? population (no. of organisms) 400 300 200 100 0 0 10 20 30 40 50 60 70 80 90 100 time (days) species 1 species 2 species 3 species 4 species 1 species 2 species 3 species 4

Explanation:

Step1: Identify carrying - capacity concept

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

Step2: Analyze each species' curve

Species 1: Its population is still increasing and has not leveled off.
Species 2: Its population has leveled off, reaching its carrying capacity.
Species 3: Its population has leveled off, reaching its carrying capacity.
Species 4: Its population has leveled off, reaching its carrying capacity.

Answer:

Species 1