The formation of coral reefs is a unique natural phenomenon. What is the main factor in the formation of coral reefs? A. Volcanic activity B. Coral polyps building calcium carbonate structures C. Earthquakes D. Hurricanes 相关知识点:
A. volcanic eruptions B. activities of marine organisms C. water erosion D. earthquakes 相关知识点: 试题来源: 解析 B。解析:珊瑚礁主要是由海洋生物的活动形成的。选项 A 火山喷发不是珊瑚礁的形成原因。选项 C 水蚀不是珊瑚礁的形成原因。选项 D 地震也不是珊瑚礁的形成原因。反馈...
A. volcanic activities B. ocean currents C. low temperature D. lack of sunlight 相关知识点: 试题来源: 解析 B。解析:珊瑚礁的形成与洋流有关。选项 A 火山活动不是主要原因;选项 C 低温不利于珊瑚礁形成;选项 D 缺乏阳光也不是珊瑚礁形成的原因。反馈...
A. the activities of coral polyps B. the movement of the plates C. the heat of the sun D. the rotation of the E. arth 相关知识点: 试题来源: 解析 A。解析:珊瑚礁的形成主要是由于珊瑚虫的活动。选项 B 板块运动不是主要原因;选项 C 太阳的热量不是;选项 D 地球自转不是。反馈...
doi:10.1038/069371a0GARDINERJ. STANLEYNatureGardiner, J. S., 1904. The formation of coral reefs. Nature , 69 , 371–373.Gardiner, J. S. (1904) The formation of coral reefs. Nature 69: pp. 371-373
become bigger in sizecorals(珊瑚虫)are responsible forthe formation of coral reefs. The coralsC. die of an illness slowlyattach(贴上)to rocks or other hardD. move from one place to anothersurfaces. When they die, they harden.Then new corals grow on top of them. This makes the reef ...
The main reason for the formation of coral reefs is which of the following? A. Cold water. B. Warm water and sunlight. C. Low salinity. D. Darkness. 相关知识点: 试题来源: 解析 B。珊瑚礁的形成主要是因为温暖的水和阳光。冷水、低盐度和黑暗都不是珊瑚礁形成的主要原因。
Did you ever wonder how a l A.become smaller and smaller cOral reef forms?Tiny animals called B.become bigger in size corals(珊瑚虫)are responsible for the formation of coral reefs. The corals C.die of an illness slowly attach (贴上)to rocks or other hard D. move from one place to...
Tiny animals called coral polyps (珊瑚虫) are responsible for the formation of coral reefs. The coral polyps attach to rocks or other hard surfaces and continue to grow throughout their lives. When they die, they harden. Then new coral polyps grow on top of them. This makes the reef ...
She mainly studies the formation of coral reefs.D. She has developed a new way to protect coral reefs. (2) Paragraph 2 is mainly about___. A. what coral reefs areB. how to protect coral reefsC. natural threats to coral reefsD. the importance of coral reefs (3) The explosives...