首页
登录
职称英语
The blue of the sea is caused by the scattering of sunlight by tiny particle
The blue of the sea is caused by the scattering of sunlight by tiny particle
游客
2024-01-01
62
管理
问题
The blue of the sea is caused by the scattering of sunlight by tiny particles suspended in the water. Blue light, being of short wavelength, is scattered more efficiently than light of longer wavelengths. Although waters of the open ocean are commonly some shade of blue, green water is commonly seen near coasts, especially in tropical or subtropical regions. This is caused by yellow pigments being mixed with blue water. Phytoplankton are one source of the yellow pigment. Other microscopic plants may color the water brown or brownish-red. Near the shore, silt or sediment in suspension can give water a brownish hue. Outflow of large rivers can often be observed many miles offshore by the coloration of suspended soil particles.
Marine phytoplankton (Greek for "plant wanderers") are microscopic single-celled plants that include diatoms, dinoflagellates, coccolithophorids, green algae, and blue-green algae, among others. The growth of these organisms, which photosynthesize light, depends on a delicate balance of nutrient enrichment via vertical mixing, which is often limited by the availability of nitrogen and light. Diatoms are one-celled plants with patterned glass coverings. Each glass, or silicon dioxide box, is ornamented with species-specific designs, pits, and perforations making them popular with microscopists and, more recently, electron scanning microscopists. [br] The main idea of this passage is that ______.
选项
A、light causes sea color
B、sea coloration is varied because of a combination of length of light waves and microscopic plant life and silt
C、microscopic plant life causes sea color
D、water composition causes sea color
答案
B
解析
主旨题型。阅读全文得知,海水颜色的变化是由许多因素决定的;包括选项A、C、D,而选项B是它们的综合,所以是答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3325290.html
相关试题推荐
Althoughsunlightappearswhite,______actuallyacombinationofallthecolorso
WhenAthesunissettinginShanghai,NewYorkBisjustemergingCintosunlight
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Hisfailure______greatdisappointmentstohisparents.A、forcedB、causedC、made
Thestormhascaused______tothisregion.A、manydamagesB、muchdamagesC、muchda
随机试题
LastOctober,ToddBrillwastalkingtohismotherinthediningroomofthei
[originaltext]W:Wouldyouliketoseeamenu?M:No,thankyou.Ialreadyknow
[originaltext]M:Ouch!Thathurts!W:Whathappened?Didyoucutyourself?M:
LAN网络接口卡处于OSI参考模型的()。A.表示层 B.数据链路层 C.
A.颞线 B.鼓切迹 C.二腹肌嵴 D.弓状隆起 E.道上三角区常作为颅
当煤矿井下发生水灾时,人员溺水导致呼吸困难而窒息死亡。在进行溺水人员的救治时,所
通过问卷了解学生对美术课程的满意度,该研究方法属于()。A.调查研究法 B
企业的会计工作主要是通过一系列会计程序,积极参与企业经营者管理决策,并对企业的经
A.1 B.2 C.3 D.4
共用题干国有公司财务人员甲于2007年6月挪用单位救灾款100万元,供自己购买股
最新回复
(
0
)