create an environment conducive to open development, construct a fair, equitable and transparent system of international trade and investment rules, and advance cooperation based on win-win outcomes, shared responsibility and collective participation. The...
Ecosystem goods and services It is the extremely vital life-support services ecosystems provide to human life, its well-being, and future economic and social development. For example, the benefits ecosystems provide include food, water, timber, air purification, soil formation, and pollination....
A. Only provide a place for birds to live B. Purify water C. Produce a lot of carbon dioxide D. Prevent plants from growing 相关知识点: 试题来源: 解析 B。解析:湿地生态系统的一个重要功能是净化水源。湿地中的植物、微生物等可以过滤、吸收污染物从而起到净化水的作用。湿地不仅仅是为鸟类提供栖...
In the grassland ecosystem, what does the grass provide for the sheep? A. Shelter B. Food C. Water D. Space 相关知识点: 试题来源: 解析 B。解析:在草原生态系统的食物链中,草是生产者,羊是初级消费者。羊以草为食,所以草为羊提供的是食物。A选项Shelter表示庇护所,草不是羊的庇护所;C选项...
Amazonrainforest, 1 nameisgotfromtheAmazonRiver,playsasignificantrolein 2 (maintain)thebalanceoftheEarth?secosystem. 3 therichestbiodiversityontheEarth,the Amazonrainforest?sdifferentlevelsarehometovariouslivingthings, 4 (provide)foodand shelterforanunbelievablevarietyofwildlife.Amongallthecreatures 5 (hide...
What is the role of plants in the ecosystem? A. To provide food for animals. B. To provide shelter for animals. C. To maintain the balance of nature. D. All of the above. 相关知识点: 试题来源: 解析 D。解析:植物在生态系统中的作用包括为动物提供食物和庇护所,以及维持自然平衡。
Select an example of a global biome and an example of an ecosystem found in that global biome (grassland, forest, desert). What kind of animals and plants would you expect to make up that ecosystem? Provide one symbiotic relationship example (such as mutu ...
powerenergyismatureinawiderangeoffields. Butthereareotherconsiderations.Forexample, solarfarmsaredense(密集),whilethelandbetweenwindturbinescanbeco-usedforagriculture. Tidalpowerisan environmentally-friendly energysource.Inadditiontobeingarenewable energy,itdoesnotgiveoffanyclimategasesand doesnottakeupalotofspace...
A. To provide food for animals. B. To pollinate plants. C. To break down dead organisms and return nutrients to the soil. D. To convert sunlight into E. nergy. 相关知识点: 试题来源: 解析 C。解析:分解者的作用是分解死亡的生物体并将营养物质返回土壤,所以答案是 C。反馈...
A. They only provide shelter for animals. B. They make the water dirtier. C. They are useless for the ecosystem. D. They provide food and shelter and purify water. 相关知识点: 试题来源: 解析 D。解析:文章指出湿地植物为动物提供食物和庇护所,一些湿地植物还通过吸收污染物来净化水,而选项A说...