Which of the following best describes an invasive species?
A)Approximately 90% of all introduced non-native species become invasive species.
B)Non-native species become invasive when they become established in a new area,taking over niches that were already occupied by native species.
C)Dispersal,even if anthropogenic,is a normal biogeographic process and,therefore,no cause of alarm.
D)An invasive species is any non-native introduced species,whether it becomes established or not.

Question

Quizplus · Accepted Answer

An invasive species is a non-native species that becomes established in a new area and causes harm to the environment, economy or human health. This harm is typically caused by the invasive species outcompeting and displacing native species, which can lead to the loss of biodiversity and ecosystem function. Therefore, option B best describes an invasive species. Options A and D are not accurate, as not all introduced non-native species become invasive, and an invasive species must be established in order to cause harm. Option C is also not accurate, as while dispersal is a natural process, anthropogenic dispersal can have negative impacts on ecosystems.

Which of the Following Best Describes an Invasive Species