首页
登录
职称英语
The ocean covers three quarters of the earth’s surface, produces 90 percent of a
The ocean covers three quarters of the earth’s surface, produces 90 percent of a
游客
2024-08-05
42
管理
问题
The ocean covers three quarters of the earth’s surface, produces 90 percent of all its life—supporting oxygen, and is the driving force behind the entire weather system.There are over 450 million cubic miles of sea water on the earth; and each cubic mile contains over 150 million tons of minerals.So vast and so pervasive is the sea that if the earth’s crust were made level, ocean water would form a blanket over 8,000 feet deep.The oceans contribute immeasurably to the earth’s life support system as well as provide an untapped storehouse of food, minerals, energy, and archaeological treasure.The deep sea is the last frontier left to explore.
选项
答案
海洋覆盖地球表面的四分之三,地球上维持生命的氧气90%来自海洋,整个天气系统变化的动力也是海洋。地球上海水超过四亿五千万立方英里,每立方英里含有的矿物质超过一亿五千万吨。海洋如此广大浩瀚,分布如此辽阔,如果使地球表层平整起来,那么海水可以形成深八千多英尺的覆盖层。海洋对地球的生命维持系统做出了不可估量的贡献,同时又是一座尚未开发的仓库, 储有食物、矿物、能源和文物宝藏。深邃的海洋是尚待探索的最后一个领域。
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3706139.html
相关试题推荐
Howmuchwatercanweuse?...Notthatmuch!75percentoftheearthiswater:b
Thetableshowsthepercentageofjourneysmadebydifferentformsoftransport
Thechartbelowshowsthepercentageofdeathcausedbyseveraldiseasesin
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Whichdiagramshowsthepercentageofyoungpeopleusetheirmobilephonesatle
随机试题
Manistheonlyanimalthatlaughs.Whyisthistrue?Whatmakesusrespond
下列防水材料中最适用于较低气温环境的是( )。A.煤沥青纸胎油毡 B.铝箔面
《建设工程安全生产管理条例》规定,施工单位使用承租的机械设备和施工机具及配件的,
患儿,3岁。平时易患感冒,自汗,偶有盗汗,汗出以头部、肩背部汗出明显,动则尤甚,
下列不属于米醋作用的是A.疏肝健脾B.散瘀止血C.行水解毒D.理气止痛E.矫臭矫
一般来说,企业适宜采用滞后型薪酬策略的时期是( )。(对应单选82#)A.经济
批量转让是指金融企业对任意的不良资产进行组包,定向转让给资产管理公司的行为。(
不可以用来维持和扩大其承保能力的方法是()。A.分散风险 B.集中风险
混凝土拌合时水泥的称量允许偏差是( )。A.±1% B.±2% C.±3%
肿瘤第一级预防的主要措施为( )。A.改变不健康的生活方式 B.基因治疗
最新回复
(
0
)