A. Cut down all the plants. B. Kill all the animals. C. Throw rubbish everywhere. D. Protect it so that plants and animals can live there. 相关知识点: 试题来源: 解析 D。中文解析:我们应该保护沙漠生态系统,这样动植物才能继续在那里生存。A 选项砍倒所有的植物、B 选项杀死所有的动物、C 选项...
Primary consumer C. Secondary consumer D. Decomposer 相关知识点: 试题来源: 解析 C。解析:在沙漠生态系统中,昆虫吃植物是初级消费者,蝎子捕食昆虫,所以蝎子是二级消费者。蝎子不是生产者,它不能自己制造食物;不是初级消费者,它不是以植物为食;也不是分解者,所以A、B、D选项错误。反馈 收藏 ...
C. The number of scorpions will first increase and then decrease. D. The number of scorpions will first decrease and then increase. 相关知识点: 试题来源: 解析 C。解析:如果小昆虫数量突然翻倍,蝎子的食物增多,蝎子数量会先增加。但随着蝎子数量增加,小昆虫数量又会因为被捕食过多而减少,蝎子的食物...
What human activities can damage the desert ecosystem? A. Planting trees. B. Building dams. C. Overgrazing and mining. D. Fishing. 相关知识点: 试题来源: 解析 C。中文解析:过度放牧和采矿等人类活动会破坏沙漠生态系统的微妙平衡。反馈 收藏 ...
Desert Geographic term describing a natural ecosystem. Deserts cover about one-fifth of the Earth’s surface. 4 Desolate Lacking in activity, deserted. After the factory closed, the once-bustling town became desolate. 4 Desert Not necessarily sandy; some are rocky or ice-covered. The Antarctic ...
"Encyclopedia of Global Warming and Climate Change, Volume 1"; S. George Philander, ed.; Sage Publications; 2008 Merriam-Webster: Ecosystem Reducing Pollution Guide: Ocean Ecosystem Cite This Article MLA Dorsch, Jim. "What Are The Eight Main Ecosystems?"sciencing.com, https://www.sciencing.com...
There are two main types of desert that you can find: hot and dry, and freezing and cold. The absence of water and extraordinary heat or cold makes this biome a poor choice for most life structures. A large portion of the plants you’ll see in the desert are types of cacti. The ...
What is another important habitat in the marine ecosystem? A. Desert islands. B. Mountain ranges. C. Kelp forests. D. Grasslands. 相关知识点: 试题来源: 解析 C。原因:文中提到“Kelp forests are another important habitat, providing food and shelter for many marine animals.”。 反馈 收藏 ...
well-suitedtotravelersofallbudgets.Foodis cheap,soisgettingaroundusingtheminibuses. Youcanfindhostelsandlocalhomestaysforless than$10.Mealscost$4—$8perday. Romania,$33/day IfyouareplanningaEuropeantripthat?saffordableandalittlebitoffthebeatenpath,Romaniais perfect for you.Unlike other popular places...
What are the characteristics of a mountain ecosystem? What are some locations for the marine biome? What are the two main types of tundra biomes? What are the characteristics of a desert ecosystem? What type of biome is found in the Middle Veld?