An example of a keystone species would be a 相关知识点: 试题来源: 解析 sea otter 1. 题目要求选择合适的单词填空,并注意单词的形式。 2. 句意为:我们可以在海上看到很多___。 3. ship 意为“船”,大海里有船,符合句意, many 后接可数名词复数形式,所以填 ships。反馈...
For today, everyone agrees: the future is looking bright for New York Harbor.24. Why are oysters called a keystone species?A. They grow quickly.B. They are delicious.C. They support underwater life.D. They are able to resist pollution.25. What was the problem with oysters over a ...
Keystone species has greater influence on community characteristics relative to its abundance. Such species play a critical role in maintaining the structure and integrity of an ecological community, affecting many other organisms in an ecosystem and helping to determine the types and number of various...
A keystone species is a species the plays a major role in its ecosystem relative to the number of individuals in the population of that species. This is why we consider species such as woodpeckers to be keystone species; they are ecosystem engineers and though not comparatively plentiful, they ...
A keystone is a part of an arch at the very top of the structure. Keystones support the weight of the other stones in the arch, holding the arch upright and in place. If a keystone is damaged, it compromises the stability of the whole arch....
1Keystone heroesThe gray wolfThe Gray wolf(狼) is a keystone species(物种)in Yellowstone National Park. Until the 19thcentury, hundreds of wolves roamed(闲逛Yellowstone. They caught the elk(麋鹿),thelargest member of the deer(鹿) family. Thegovernment(政府) was afraid the wolves wouldattack ...
(新素材I跨学科·生物)Polar bears are considered a keystone species for the Arctic. It is estimated that there are 26,000 polar bears in the wild, living across countries that border the Arctic Ocean, including Canada, Russi a and Norway.As the most iconic animal of the Arctic, polar bears...
While it has been useful in framing biodiversity research and garnering support in conservation policy circles, the terminology surrounding the concept has been expanded to the extent that there is considerable confusion over what exactly a keystone species is. Several authors have argued that the ...
Answer to: If a species is a keystone species, should greater attention be paid to conservation of that species than others in a habitat? By...
Is a dog a keystone species? Is a gorilla a primate? Are there any mountain gorillas in captivity? Can gorillas and chimpanzees mate? Are grizzly bears a keystone species? Is a tiger a keystone species? Are black bears a keystone species?