Answer:
The correct answer is C.
Explanation:
If we take a look at the options one by one we can say that:
A is not correct, the population size of predators depend on the population size of their prey and if the prey is scarce this will have a negative impact on the population size of the predators.
B is not correct because competition for resources is not density-independent whether the food is plentiful or not.
C is correct because as it is stated in the given option, the transmission and spread of a disease is easier when the population is large and the number of interactions is high.
D is not correct because the ability to adjust to the changes in temperature is not a trait that is dependent on the population density, it is dependent of the organism's ability to adapt.
Answer:
C. Disease is density-dependent because transmission occurs more easily when a population is large
Explanation:
The question examines the knowledge of concepts of factors affecting the population.
A population is the collection of organisms of a particular species, sharing a particular characteristic of interest, most often that of living in a given area.
Option A is false. The population size of predators decreases when their prey is scarce.
Competition in a population involves individuals contending in rivalry for resources.
Option B is false. Competition for resources is density-dependent when food is plentiful.
Option C is true.
Disease is an abnormal condition of a animal or plant in a population that causes discomfort or dysfunction .
The mode of disease transmission actually is density-dependent because transmission occurs more easily when a population is large.
The option D is false.
Temperature is an abiotic factor not a density dependent factor.
A change in average temperature is not density-dependent factor.
The temperature is the measure of cold or heat, often measurable with a thermometer.
C is therefore the correct option.
