Question

1. a large island in the pacific ocean supports isolated populations of two groups of frogs. the following observations of these frogs were recorded by scientists. (a) are different in color (b) excrete different products (c) live in different, isolated habitats (d) can interbreed and produce fertile offspring

Explanation:

To determine if two frog groups are the same species, the key is whether they can interbreed and produce fertile offspring (biological species concept). Color (A), excretory products (B), or habitat (C) don't define species. Only D relates to species definition.

Answer:

D. Can interbreed and produce fertile offspring