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
2025-02-02
17
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 growth of phytoplankton is often limited by the availability of ______.
选项
A、oxygen
B、hydrogen
C、nitrogen
D、carbon dioxide
答案
C
解析
细节题型。见文章第二段第二句: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.所以选项C正确。
转载请注明原文地址:http://tihaiku.com/zcyy/3939849.html
相关试题推荐
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
Theblueoftheseaiscausedbythescatteringofsunlightbytinyparticle
ThedenseBelgianfogsiscausedbythecoolingofhumidsurfaceairtoarelati
Besidestheelectrons,anatomalsocontainspositiveelectricalparticles______
Onesymptomofthediseaseisahighfever.A、symbolB、signC、causeD、painB名词辨析s
Twomajorreasonshavecausedthis______:lackofinteractionandcommunication
Hisfailure______greatdisappointmentstohisparents.A、forcedB、causedC、madeD
Thelenientdecisionofthedeancausedangeramongtheprofessors.A、correctB、u
Doctorswarnedsun-starvedtouristswhoreceivedtoomuchsunlightthattheywer
随机试题
71.Scienceisoftenhardtoread.Mostpeopleassumethatitsdifficultiesa
Acomposer’sguildisplanningitsspringconcert,andtenpieceshavebeensubm
Inrecentyears,manyfamousuniversitiesloweradmissionrequirementsforc
Ourbodiesdependonsleeptokeepanumberofdelicatelybalancedsystemsr
Fearresponsescanonlybeerasedwhenpeoplelearnsomethingnewwhileretr
已知方程组无解,则
流体外掠平板形成边界层,下列关于边界层厚度及流动状态的表述中,不正确的是( )
基金管理费是从基金资产中提取的。()
智力水平随年龄而变化的轨迹是指( )。A.智力发展模式 B.智力发展过程
确定口腔流行病学调查样本含量的依据是A.分组情况 B.患病率大小 C.能否双
最新回复
(
0
)