Which of the Following Would Be the Best Experiment for an Ecologist

Multiple Choice

Which of the following would be the best experiment for an ecologist to conduct to test whether a species is occupying all of its fundamental niche or only a portion of it?

A) Study the temperature range and humidity requirements of the species.
B) Observe if the species expands its range after the removal of a competitor.
C) Measure the change in reproductive success when the species is subjected to environmental stress.
D) Observe if the niche size changes after the introduction of a similar non-native species.