Question

these names mean just what they say: density-independent factors have an impact on the ____________, whether the population is large or small, growing or shrinking.
density dependent limiting factors: factors that depend on population size. (competition, predation, food, disease, and parasitism)
density independent limiting factors: affect all populations in a similar way independent of population size. (draught, wild fire, volcanic eruptions, hurricane, deforestation)

Explanation:

Density-independent limiting factors are defined as factors that affect populations regardless of their size, growth, or shrinkage. The text explicitly states these factors impact populations in a similar way no matter the population's characteristics, so the blank refers to the population.

Answer:

population