Câu hỏi:
04/04/2020 295Read the followingpassage carefully and then choose the best answer to each question.
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.
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 richness are used synonymously; little is known about the evenness of butterfly distribution. The New World butterflies make up the preponderance of examples because they are the most familiar species. It is hoped that by focusing on them, the errors generated by imperfect and incomplete taxonomy will be minimized.
Which of the following is NOT well understood by biologists?
Đáp án chính xác
Câu hỏi trong đề:
30 đề thi thử đề thi thử THPTQG môn Tiếng Anh có lời giải chi tiết !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án là D. Ý trong bài: 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,
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) SIMILAR in meaning to the underlined word(s) in each of the following questions.
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Xem đáp án »
11/04/2020
62,679
Câu 2:
It is essential that every student x to learn English at university.
Xem đáp án »
11/04/2020
24,683
Câu 3:
Don't worry about trying to catch last train home, as we can easily x you up for the night.
Xem đáp án »
27/03/2020
24,260
Câu 4:
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) SIMILAR in meaning to the underlined word(s) in each of the following questions
It was inevitable that the smaller company should merge with the larger.
Xem đáp án »
11/04/2020
19,107
Câu 5:
Most people prefer flying x going by the sea because it’s too much faster.
Xem đáp án »
27/03/2020
17,735
Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the word(s) SIMILAR in meaning to the underlined word(s) in each of the following questions.
There used to be a shop at the end of the street but it went out of business a year ago.
Xem đáp án »
11/04/2020
13,140
về câu hỏi!