Select each correct answer. More than one answer may be correct.

Question

The organisms within an established ecosystem interact and form relationships with each other over time. This interdependence allows ecosystems to remain relatively stable for hundreds and sometimes thousands of years.

Which of the following would likely decrease the population size of an established plant species?
a sudden change in climate
an increase in available nutrients
introduction of a non-native species
an extended drought

Answer 1

a sudden change in climate
introduction of a non-native species
an extended drought