EVERYDAY SCIENCE

Detailed explanation-1: -For example, some diseases spread faster in populations where individuals live in close proximity with one another than in those whose individuals live farther apart. Similarly, competition for food and other resources rises with density and affects an increasing proportion of the population.

Detailed explanation-2: -Additionally, malaria, which is transmitted by mosquitoes, is among density-dependent factors examples that, in the past, limited human populations within the tropics.

Detailed explanation-3: -Answer and Explanation: Diseases are considered as density-dependent factors because diseases can only spread if the organisms live in close proximity to one another i.e. the population of the organisms should be dense.

Detailed explanation-4: -In density dependent disease transmission contact rates increase as density increases, therefore disease transmission also increases. Frequency dependent disease transmission occurs when there is no relationship between contact rates (or transmission events) and density of a population.

Detailed explanation-5: -Competition within the population. When a population reaches a high density, there are more individuals trying to use the same quantity of resources. Predation. Disease and parasites. Waste accumulation.