Which aspect of butterflies does the passage mainl...

D

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Đáp án là D. Ý trong bài:   Butterflies are among the most extensively studied insects, an estimated 90 percent of the world's    species have scientific names. As a consequence, they are, perhaps, the best group of insects for      examining patterns of terrestrial biotic diversity and distribution. Butterflies also have a favorable image with the general public. Hence, they are an excellent group for communicating information on science and conservation issues such as diversity.