Question

why are exotic species a threat to australian wildlife?
a. many people favor them over native species and want to replace native species with exotic ones.
b. they tend to be predators, and they attack and kill many native species.
c. they compete with native species for food and water.
d. all exotic plants are poisonous to native wildlife.
please select the best answer from the choices provided
○ a
○ b
○ c
○ d

Explanation:

• Option A: People's preference doesn't directly threaten wildlife; the threat is ecological, not human preference - based replacement, so A is incorrect.
• Option B: While some exotic species are predators, not all are, so this is too narrow.
• Option C: Exotic species (both plants and animals) compete with native species for limited resources like food, water, and habitat, which is a major threat. This is a broad and accurate reason.
• Option D: The statement "all exotic plants are poisonous" is false; many exotic plants are not poisonous to native wildlife.

Answer:

C. They compete with native species for food and water.