相关知识点: 试题来源: 解析 C。解析:文章提到“Some of the important species found in wetlands include waterfowl, amphibians, reptiles, and many types of fish.”,所以答案是 C。A、B、D 选项中的动物都不是湿地常见的重要物种。反馈 收藏
C. Lack of food, water, and shelter. D. Competition between species. 相关知识点: 试题来源: 解析 A。中文解析:物种多样性面临的主要威胁有栖息地破坏、污染和气候变化等,选项 A 正确。B 选项中的疾病和自然灾害不是主要威胁;C 选项缺乏食物、水和住所不是主要威胁;D 选项物种之间的竞争不是主要威胁。
Thesearejustsomeofthecausesofmemoryloss.Atpresent,expertsareunabletotell exactlywhatthemainreasonleadingtomemorylossis.Thisisbecausetherecouldbemany reasonsleadingtoit,suchasenvironmentalfactors.Thebrainisacomplexorgan. 5 What mattersisthatyouareabletofollowtherightsetofguidelinestopreventyourselffromsuffering from...
What has caused somespeciesextinction in thetropical rainforests? A. Humans’destroyingthe trees. B. Carbonsinks being reduced. C. Lacking renewableresources. D. Fences not beingbuilt around the rainforests. 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
What is a Species A species of plants or animals, as the term has been generally used by naturalists, comprises all such individuals as are so similar to each other that we may suppose them all to have proceeded from one common parentage, and so dissimilar from all others that they could...
aThe complexity of what species are is beyond the object of this book, beyond providing some clue to the concept of a species accepted in the checklist. 复杂的什么种类是在这本书之外对象,在提供某一提示之外向在清单接受的种类的概念。[translate]...
But it’s very easy to save space by removing the unnecessary details, like all of the super-quiet parts of the soundtrack that are barely perceptible if you’re not a hi-fi enthusiast wearing some expensive headphones. JPEG photos work according to the same “lossy” principles too. My ...
Where they live: Water bears, true to their name, live in water, from oceans to drops of water on plants. They can live high in the mountains and deep in the ocean. What they eat: Tardigrades mostly eat plants and algae. Some species eat other, smaller creatures, like microscopic worms...
species, nevertheless present a range of activity and a sensory apparatus so different from ours that the problem I want to pose is exceptionally vivid (though it certainly could be raised with other species). Even without the benefit of philosophical reflection, anyone who has spent some time ...
Crocodiles are the largest reptiles in the world. They coexisted with dinosaurs, making them one of the oldest living species today. After we stopped for gasoline, we had a renewed sense of purpose for the road trip. Thank you very much for your inquiry. Due to the volume of emails we...