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Câu trắc nghiệm: Read the following passage and mark the letter A,B, C or Don your answer sheet to indicate the correct answer to each of the questions. Butterflies are among the most extensively studied insectsan 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. Perhaps the aspect of butterfly diversity that has received the most attention over the past century is the striking difference in species richness between tropical and temperate regions. For example, in 1875 one biologist pointed out the diversity of butterflies in the Amazon when he mentioned that about 700 species were found within an hour’s walk, whereas the total number found on the British islands did not exceed 66, and the whole of Europe supported only 321. This early comparison of tropical and temperate butterfly richness has been well confirmed. A general theory of diversity would have to predict not only this difference between temperate and tropical zones, but also patterns within each region, and how these patterns vary among different animal and plant groups. However, for butterflies, variation of species richness within temperate or tropical regions, rather man between them, is poorly understood. Indeed, comparisons of numbers of species among the Amazon basin, tropical Asia, and Africa are still mostly “personal communication” citations, even for vertebrates, In other words, unlike comparison between temperate and tropical areas, these patterns are still in the documentation phase. In documenting geographical variation in butterfly diversity, some arbitrary, practical decisions are made. Diversity, number of species, and species ...

Các đáp án đưa ra:

A. physical

B. confusing

C. noticeable

D. successful

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11-2024 10-2024 Yêu thích

Nguyễn Vũ Nam

Hoàng Trịnh Minh

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Đặng Mỹ Duyên

Đặng Mỹ Duyên

_ღĐức Phátღ_

Thưởng th.9.2024

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