Which type of limiting factor affects a large population more than it affects a small population?
a) density dependent
b) density independent
c) population dependent
d) population independent

Answer;

-Density dependent

Explanation;

-Limiting factors are environmental conditions that limit the growth, abundance, or distribution of an organism or a population of organisms in an ecosystem.

-The density dependent factors are factors whose effects on the size or growth of the population vary with the population density. There are many types of density dependent limiting factors such as; availability of food, predation, disease, and migration.

The correct answer is option A, that is, density dependent.  

In nature, the size of the population and growth are restricted by various elements. Some are density-independent, while some are density-dependent. The density-dependent limiting factors results in a change of a population's per capita growth, usually, to drop with increasing population density. One such example is the fight for limited food between the members of a population.  

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.