An ecosystem is best defined as:

Which of the following is a density-dependent limiting factor?

Which of the following is a density-independent limiting factor?

The maximum number of individuals that an environment can support is called its:

A J-shaped population growth curve usually represents:

Which of the following represents logistic growth?

Which type of species is most likely to be a pioneer species in succession?

When succession occurs in an area with no soil present, it is called:

Secondary succession differs from primary succession because it:

Which of the following is a keystone species?

A population crash occurs when:

The interaction in which both species benefit is called:

When one organism benefits and the other is unaffected, the interaction is called:

Which of the following is an example of parasitism?

Which of the following can cause population change?

An invasive species can affect an ecosystem by:

Which type of growth is shown when a population increases slowly at first, then rapidly, before stabilizing?