A. a place with many animals B. a system of nature C. a group of people D. a kind of plant 相关知识点: 试题来源: 解析 B。“ecosystem”是“生态系统”,即自然的一个系统。选项 A 只是说有很多动物的地方不全面;选项 C“一群人”错误;选项 D“一种植物”错误。本题考查对特定词汇的猜测。
There are also larger animals such as deer that graze on the plants in the forest. The biodiversity in the forest is extremely high. There are countless species of plants, animals, and microorganisms living together. Each species plays a unique role in the ecosystem. For example, some plants...
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Why are animals endangered in the taiga biome? Why are puffins important to the tundra biome? Why are whales important in the marine biome? Why is biodiversity low in the Taiga forest biome? What causes an ecological succession in an upland forest?
How do extinct animals affect the ecosystem? What ecosystem services have been enhanced most by human use? What is the ecological value of biodiversity? Why is loss of biodiversity a problem? How does ecological succession relate to biodiversity loss and conservation? What is a rainforest's role...
Birds are not only beautiful to look at, but they also play an important role in the ecosystem. Birds help to pollinate plants and spread seeds. They also eat insects and other small animals, which helps to control the population of these pests. In addition, birds are an important part ...
an important role in maintaining the biodiversity of ecosystems.During the dry season, elephants use their tusks 4. to dig (dig) for water. This not only allows the elephants to survive in dry envi-ronments, but also 5. provides(provide)water for other animals that share the harsh habi-...
aThere have been many types of ecological disasters caused to the Australian ecosystem by introducing other animals. The most famous one was the introduction of the rabbit.[translate]
just as it depends on the climate change.Everyone,from oneself to companies and to governments,should play an important role to improve the situation.If nothing is done,the numbers of the wild animals will be smaller and even none left.And at last,the problem will threate...
Fierce carnivores likeTyrannosaurus rexandGiganotosaurusget all the press, but it's a fact of nature that the meat-eating "apex predators" of any given ecosystem are tiny in number compared to the plant-eating animals on which they feed (and which themselves subsist on the vast amounts of ...