Occurrence in the community of a number of cases of disease that is unusually large or unexpected

#Question id: 3353

#Section 2: Evolution

#Question id: 11176

#Section 4: Behavioural Ecology

Species that reproduce once and then die are ______ species.

#Question id: 10655

#Section 1: Ecology

Which of the following statements about the evolution of life histories is correct?

A) Unstable environments with unlimited resources favor r-selected populations.

B) K-selected populations are most often found in environments where density-independent factors are important regulators of population size.

C) Most populations have both r- and K-selected characteristics that vary under different environmental conditions.

D) The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities.

#Question id: 4585

#Section 2: Evolution

The cow Bos primigenius (which is bred for meat and milk) has a smaller brain and larger eyes than closely related wild species of ungulates. These traits most likely arose by ________.

#Question id: 10854

#Section 1: Ecology

Which of the following is an example of a hemiparasite?