Why do some deserts have oasis? A. Due to volcanic activity. B. Because of underground water sources. C. Because of frequent rainfall. D. Due to strong winds. 相关知识点: 试题来源: 解析 B。一些沙漠有绿洲是因为有地下水源。火山活动、频繁降雨和强风都不是沙漠中有绿洲的主要原因。
【答案】Today, the earth is witnessing an increase in deserts. Both weather and people are responsible for this. (要点1) In North Africa, serious dryness results primarily from its climatic conditions, and continued gradual global warming has made the land even drier. (要点2) Human activities ...
Why do cacti grow well in deserts? A. Because of the frequent rain. B. Because of the high temperature. C. Because of their ability to store water. D. Because of the soft sand. 相关知识点: 试题来源: 解析 C。仙人掌在沙漠中生长良好是因为它们具有储存水分的能力。沙漠中雨水稀少,选项 A...
高分句型二:Fortunately, efforts can be made to stop the expansion of deserts.译文:幸运的是,可以努力阻止沙漠扩张.分析:这句话使用不定式作目的状语.概要写作,简言之就是对所读过的文章简要概括,写出文章的中心大意,也可称之为摘要.写概要时,读者要是把文章的具体信息用一些具有概括功能的词和句表述出来,而...
In many animal species the female backs down and becomes sole parent while the male deserts, but in other species the male assumes responsibility and the female deserts, and in still other species both parents assume shared responsibility. Those varying outcomes depend on three interrelated sets of...
FIGHTING GRO WING DESERTS Why do we have deserts today? Deserts have not always been here. Most deserts that we have today were once green lands full of the plant life. One of today's biggest deserts is in North Africa.However, in the Ist century BC farms in the North Afric a grew ...
Deserts becoming cold at night has a lot to do with humidity, clouds and even wind, but contrary to popular belief, not all deserts lack humidity. A lack of moisture in the air in deserts is actually not a given! Places like Kuwait and the UAE are more humid than other deserts (e.g...
WHY DESERTS LOSE NITROGEN Unexpectedly active denitrification by bacteria after desert rainstorms may account for previously unexplained nitrogen loss in desert soils. Research by William Peterjohn of Duke University shows that under wet conditions, denitrification rates in desert soils from the Chihau...
The dusty red planet has fascinated us for centuries. Even as we learn more, its mysteries keep us in suspense.
Why do some men and women climb mountains,cross deserts and go to freezing cold parts of the world?No one makes them to do these. Do they climb mountains to get to the top?Do they cross deserts to get to the other side?Do they go to freezing cold places because they like the cold...