To harvest more wood, build a better chain saw; to pump more oil, drill more wells; to get more food, invent pest-resistant plants.That logic thrived on new frontiers and more intensive production, and it held off the prophets of scarcity—from Thomas Robert Malthus to Paul Ehrlich—whose...
D. They are not as old as angiosperm fossils discovered in the South Pacific. Paragraph 6 is marked with an arrow 正确答案:A 显示答案 进入答题 问题反馈收藏题目 译文 Evolution of the Flowering Plants [#paragraph1]Many aspects of the history of flowering plants (angiosperms) remain mysterious....
way in which biodiversity (biological diversity) isdistributedover the land surface of the planet, we find that it is far from even.The tropics contain many more speciesoverallthan an equivalent area at the higher latitudes.This seems to be true for many different groups of animals and plants....
看第一句话 “”A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals that are toxic to most other plants.” 注意这里 ..one of group of ...!!! 所以C的意思就是所有能在有毒土壤里生存的植物都产生了histidine in large...
(about the hunt war etc)are gradually developed at first through the use of action and dialogue and then through the assumption of each of the roles by a different person.A closely related theory traces theater to those dances that are primarily rhythmical and gymnastic or that are imitations...
Which clade are land plants most closely related to? a. Charophyta b. Chlorophyta c. Red algae d. "SAR" Which of the following is not a member of the phylum Arthropoda? (a) Spiders. (b) Sea urchins. (c) Millipedes. What is the common name for members of phylum ascomycota? Is p...
A.Geographic barriers are less likely to keep apart populations of plants than populations of animals B.Geographic barriers are more likely to keep apart populations of large organisms than populations of small organisms C.Some members of a species are able to cross geographic barriers, while other...
Tim’s DNA is about 1/4 Ashkenazi Jewish, a population of European Jews who tend to be closely related as a relatively historically insulated community. Even more interesting: Tim’s mother (of European descent) hadn’t known. We are all connected. We are family. ...
D. Botanists disagree over whether the most primitive forms of living plants are located in parts of Africa and South America or in the South Pacific. 你的答案: 正确答案:B 题目解析: 登录后才能查看题目解析,还没有账号?马上注册 本文生词0 ...
A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals that are toxic to most other plants. Agronomists studying the growth of this herb have discovered that it produces large amounts of histidine, an amino acid that, in...