[单项选择]

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 l
A. oxygen
B. hydrogen
C. nitrogen
D. carbon dioxide

最新试题

• ●    [单选题]收到申诉的机关必须对申诉及时处理，并自收到申诉之日起______日内向申诉者作出答复。
• ●    [判断题]35kV开关柜的保护出口压板维护保养时，只需检查压板安装是否牢固、接线是否可靠即可。（
• ●    [单选题]在带电线路、设备附近立、撤杆塔，杆塔、拉线、临时拉线、起重设备、起重绳索应与带电线路、设备
• ●    [判断题]高速铁路区段,使用自动站间闭塞法行车时,动车组以外的列车进入区间的行车凭证为出站信号机或线
• ●    To most Africans, tribalism simply means very stro
• ●    现场标准化作业指导书编制应遵守的原则是什么？