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Correct Answer: D) Climate change.
Correct Answer: B) Cloning.
Correct Answer: D) Convention on International Trade in Endangered Species of Wild Fauna and Flora.
Correct Answer: C) Keystone species.
Correct Answer: C) Deciduous trees.
Correct Answer: D) Fungi.
Correct Answer: A) Decrease.
Correct Answer: B) Artificial reef.
Correct Answer: C) The number of species within a habitat or a region.
Correct Answer: B) Secondary succession.
Correct Answer: B) Threatened.
Correct Answer: D) Biodiversity.
Correct Answer: D) Background Extinction.
Correct Answer: B) 40, 000.
Correct Answer: D) All of the above.
Correct Answer: C) National Bureau of Plant Genetic Resources.
Correct Answer: D) Illegal trade of wild species as pets.
Correct Answer: A) Increase the stability of an ecosystem.
Correct Answer: B) Species diversity.
Correct Answer: C) An invasive species.
Correct Answer: A) Insects.
Correct Answer: D) Threatened.