What is species diversity? A. The number of species in an ecosystem. B. The variety of different species living in an ecosystem. C. The size of an ecosystem. D. The health of an E. cosystem. 相关知识点: 试题来源: 解析 B。中文解析:物种多样性指的是生活在一个生态系统中的不同物种的...
What does species diversity refer to? A. The variety of genes within a species. B. The variety of species in an ecosystem. C. The variety of habitats. D. The variety of climates. 相关知识点: 试题来源: 解析 B。物种多样性是指一个生态系统中物种的丰富程度。选项 A 是遗传多样性;选项 C...
Species diversity isthe number of different species that are represented in a given community (a dataset). ... Taxonomic or phylogenetic diversity is the genetic relationship between different groups of species. Species evenness quantifies how equal the abundances of the species are. How do you m...
The diversity of species is an important characteristic of ecological system. What is the significance of species diversity in ecological system? A. Increase the stability of ecological system B. Reduce the competition among species C. Decrease the complexity of ecological system D. Make E. co...
(species diversity)是指一定区域内物种的总和及其变化, 包括物种组合的状况(区系)、起源、演化、分布格局和维持机制等. 物种多样性是生物多样性在物种水平上的表现, 是生物多样性的核心组成部分, 当谈及生态系统多样性和遗传多样性时, 就已经涉及物种多样性. 因为物种是构成生态系统多样性的基本单元, 同时也是遗传...
Evolution leads to the diversity of species. What does “diversity” mean? A. similarity B. uniqueness C. variety D. sameness 相关知识点: 试题来源: 解析 C。本题考查“diversity”的含义。“diversity”表示多样性,C 选项“variety”也是多样性的意思。A 选项“similarity”是相似性;B 选项“...
But exactly how these and other forces work together to shape diversity is largely a mystery.Elizabeth PennisiSciencePennisi, E., 2005. What determines species diversity? Science 309: 90.Pennisi E. What determines species diversity[ J]. Sciem'e,2005, 309:90....
61. What is the main idea of the third paragraph? A. There is high species diversity in parks. B. Species diversity can help people feel happy C. It is important to listen to birds sing. D. Keeping birds is good for people's health. 相关知识点: 试题来源: 解析 答案见上 反馈...
Is there a trade-off between species diversity and genetic diversity in forest tree communities? The two most important components of biodiversity, species diversity and genetic diversity, have generally been treated as separate topics, although a coor... Wehenkel,Bergmann,Gregorius,... - 《Plant ...
t to conserve where Diversity of habitat, species and genes: What to conserve whereDiversity of habitat, species and genes: What to conserve whereThielEgenter, ConnyGugerli, FelixHolderegger, RolfTaberlet, PierreIntraBioDiv consortium