Question

Rinderpest (a virus) has high mortality in wildebeest (a kind of herbivore), especially in young animals. From the early 1960s, after the elimination of a virus called rinderpest, the wildebeest population has increased dramatically from 1958 to 1978. The elimination of rinderpest impacted the wildebeest population. What type of factor is rinderpest

Answer 1

Rinderpest is a viral disease that had a negative impact on the wildebeest population.

Step-by-step explanation:

Rinderpest is a viral disease that impacts the wildebeest population. The virus is highly deadly, especially for young animals. After the elimination of rinderpest in the 1960s, the wildebeest population experienced a dramatic increase from 1958 to 1978, indicating that rinderpest had a negative impact on their population.

Answer 2

density-dependent, top-down factor

Step-by-step explanation:

In biology, limiting factors are resources and other conditions in the environment whose presence/availability limit the population growth rate. Density-dependent factors refer to the conditions whose effects on the size/growth of the population vary depending on the population density. Some examples of density-dependent factors include diseases, competition, and predation, etc. These factors can exhibit a positive or negative correlation with the population size. Moreover, bottom-up population control (species limitation by resources) refers to limitations placed by resources allowing growth (e.g., food source or habitat), while top-down population control (limitation by enemies), refers to limitations placed by factors that control the death rate in the population (e.g., predation or diseases).