Which of the following is the most reasonable statement about poisonous Cane toa

Question

Which of the following is the most reasonable statement about poisonous Cane toad Bufo marinus: a. The Cane toad is successful as an invasive species in Australia because its new predators have not been part of the evolutionary arms race that happened in its native habitat, and lack competition due to low numbers of amphibian species b. The Cane toad is successful as an invasive species because it has been actively introduced on several continents for recreational drug use c. The Cane toad has evolved its toxicity due to disruptive selection leading to longer legs in the populations d. The Cane toad populations separated when the Pangaea started to drift apart, and some populations became invasive species on their new continents

Explanation / Answer

a. The Cane toad is successful as an invasive species in Australia because its new predators have not been part of the evolutionary arms race that happened in its native habitat, and lack competition due to low numbers of amphibian species

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