Author Question: Which one of the following is not a major source of invasive species in the world? A) Deliberate ... (Read 64 times)

rl · **on:** Jul 16, 2018

Which one of the following is not a major source of invasive species in the world?

A) Deliberate introductions of species by humans who have specific intentions
B) Accidental introductions of species as parasites or pathogens on commercial species
C) Species escaping from zoos and animal parks
D) Species escaping from commercial aquaculture enclosures

Question 2

Invasive species have been

A) hunted to extinction in most places where they occur.
B) successfully controlled in most regions using predators, viral agents, or bacterial agents.
C) successfully controlled by the introduction of other alien species that are natural competitors.
D) an ecological problem in North America since the first European colonists arrived.