相关知识点: 试题来源: 解析 C。解析:文章提到 The stability of an ecosystem depends on the balance between its components.(生态系统的稳定性取决于其组成部分之间的平衡。)组成部分包括生物因素和非生物因素,所以两者都能影响生态系统的稳定性。反馈 收藏 ...
Clean governance is considered an intrinsic and necessary condition for the steady and sustained development of the BRI, with a commitment to transparency in cooperation. All participants joined to combat corruption, strengthening their legal systems and mechanisms, harmonizing their laws and regulations, ...
Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key,scientists say, because once ecosystems pass their tipping point(临界点), it is remarkably ...
Because the energy dynamics are a complex function, an ecosystem can only be considered as a whole, not piecemeal, as every part of the ecosystem has a functional effect on another. In summary, a biological ecosystem is a complex set of relationships among the living resources, habitats, and...
【题目】An ecosystem consists of the living and nonliving things in an area ___ interact with one another. A.that B.where C.who D.what 试题答案 在线课程 【答案】A 【解析】句意:一个生态系统由一个区域内的可以相互作用的生物和非生物成的。根据句意可知,___ interact with one another是定语...
What can cause the destruction of an ecosystem? A. Planting more trees. B. Protecting wild animals. C. Polluting the environment. D. Building nature reserves. 相关知识点: 试题来源: 解析 C。污染环境会导致生态系统的破坏。选项 A 种植更多的树有助于生态系统;选项 B 保护野生动物对生态系统有益;...
And unplanned human activities have proved the idea of top-down control by top predators to be true. In the ocean, we fished for top predators such as cod on an industrial scale, while on land, we killed off large predators such as wolves. These actions have greatly affected the ecological...
解析 B。解析:在生态系统中,捕食者有助于控制猎物的数量(helps control the population of the prey),从而维持生态平衡。捕食者不会使猎物灭绝(makes the prey extinct),它对其他物种是有影响的(has no effect on other species错误),也不是只和其他捕食者竞争(only competes with other predators)。
分析句子结构可知,“___ interact with one another”是定语从句,修饰先行词“the living and nonliving things”,故排除D项,“what”不能用于定语从句.在该定语从句中,谓语动词“interact”前缺少主语,因此排除B项.“that”既可以代指人,也可以代指物,“who”只能代指人,根据中的先行词是“the living and non...
theForbiddenCityhasprovedwrongmanypeople?sideasaboutantiquerestorers,allowingthem 9 (realize)thattheyarenotold,dullprofessors,butpeoplein 10 (they)40s,30sand even20swhocanbequitepleasingtotheeye. Thedocumentaryhasevenmadesomeyoungpeopleaskthequestion,“Isittoolatetochange myjob?” 1. 2. 3. 4. 5. ...