In the field study of the desert ecosystem, which of the following is an abiotic factor? A. Cactus B. Scorpion C. Sand D. Lizard 相关知识点: 试题来源: 解析 C。解析:在沙漠生态系统中,沙子属于非生物因素。选项A仙人掌是植物,选项B蝎子和选项D蜥蜴都是动物,它们都是生物因素。从语法上看,这是...
In the desert ecosystem, which of the following is the correct food chain? A. Cactus - Sand rat - Snake B. Sand rat - Cactus - Snake C. Snake - Sand rat - Cactus D. Cactus - Snake - Sand rat 相关知识点: 试题来源: 解析 A。解析:在荒漠生态系统中,仙人掌是生产者,能够通过光合作用...
A. Providing food for humans. B. Producing oxygen. C. Providing habitats for rare species and regulating the climate. D. Generating E. lectricity. 相关知识点: 试题来源: 解析 C。中文解析:沙漠生态系统的生态意义在于为许多珍稀物种提供栖息地以及在调节气候方面发挥作用。反馈 收藏 ...
An important part of the ecosystem is being destroyed, which makes many animals lose their habitats. What is this part? A. The desert. B. The wetland. C. The skyscraper. D. The highway. 相关知识点: 试题来源: 解析 B。解析:湿地是许多动物的栖息地,湿地被破坏会使动物失去栖息地。从语法...
The Health of ecosystem is the base of ecosystem sustainability and the base of environmental health. Desert ecosystem is the typical ecosystem in desert regions and the base of developing the environmental and society in desert regions. This article, based on the analysis of ecosystem health, prob...
Animals in the Desert Desert animals include rabbits and wild cats. The most common desert rabbit is the fast, long-eared jackrabbit. Female jackrabbits can have several litters each year, with each litter consisting of at least six bunnies. Mountain lions and bobcats are two of the most well...
ecosystem- a system formed by the interaction of a community of organisms with their physical environment system,scheme- a group of independent but interrelated elements comprising a unified whole; "a vast system of production and distribution and consumption keep the country going" ...
The desert ecosystem has characteristically low biological activity and a low diversity of flora and fauna. In this harsh evironment living organisms maintain a fragile homeostatic existence and in consequence, desert ecosystems are endowed with an inherently delicate ecological balance. Scientists have ...
In a desert ecosystem, plants have special adaptations to deal with the lack of ___. A. sunlight B. water C. soil nutrients D. air 相关知识点: 试题来源: 解析 B。解析:在沙漠生态系统中,水是非常稀缺的,植物需要特殊的适应能力来应对缺水的情况。阳光在沙漠中通常比较充足,所以A选项不符合;虽然...
The desert ecosystem is the result of vandalism, is the system's water resources, biological resources and land resources development and utilization of strength within the system caused by the inherent stability of the results and balance disorders ...