When we see such a highly patterned bird we presume all individuals of that species have their spots and bars in the same places. But look closer and we'll see that the quantity and design of these patterns varies between individuals. And every now and then a bird exhibits a more obvious...
结果1 题目Whichofthefollowingdescribestheword“population”:A)Animalsfromthesamespecies(sametypeofanimal)B)DifferentanimalslivingtogetherC)AgroupofthesametypeofanimalthatlivesneareachotherAnimalsthatlivetogether 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
Which of the following best describes the results of the research discussed in paragraph 4? A. Scientists used mathematical models to show that most of the extinctions occurred in areas where humans had recently arrived. B. Scientists established that the main population of North Americans who hunt...
3. Which of the following best describes a person with “rescue behavior”? A.Polite. B.Brave. C.Honest. D.Selfless.4. What can be the best title for the text? A.New tracking devices disappoint scientists B.Magpies prove to be cleverer than scientists C.Magpies teach scientists an ...
Many species had to move northward. During the summer, these birds found plenty of room and food. In winter, however, food became scarce and they had to return to the south. A. newer theory is that increasing daylight stimulates certain glands(腺)in the B. ird's body and prepares it ...
These organic metabolites could, and probably do, include a number of different classes of organic compounds.Some are likely toxins, such as those released by the dinoflagellates (a species of plankton) during red tides, which inhibit growth of other photosynthetic organisms.In such cases, the pop...
(50) action while we wait for it may doom species and whole ecosystems to extinction. Which of the following best describes the function of the sentence in lines 35-38 A.To give an example of a particular kind of studyB.To cast doubt on an assertion made in the previous sentenceC.To ...
homogeneity wherein, the cerebrum was the organ of a unitary mind which could not be functionally differentiated to the extent Gall suggested. Which of the following best describes the organization of the passage() A.A hypothesis is described, challenged by a second hypothesis, then disproved by...
12.Which of the following statements best describes how the passage is organized? A. A description of a phenomenon is provided, forward hypotheses as to the phenomenon's cause. B. Two phenomena are introduced, and the rest of the passage provides reasons as to why the first is more common...
正确答案:A 解析:InferenceThis question depends on understanding the general points the author makes with regard to classification of individual species. The author explains that there is no single definition of species and then describes the biological species concept, which depends on reproductive compa...