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金鱼的存活时间C号瓶>B号瓶>A号瓶>D号瓶这是因为A号瓶中无金鱼藻,不能进行光合作用,金鱼没有有机物和氧气的来源,当金鱼由于呼吸作用消耗掉水中的溶解氧后便死去。D号瓶中有金鱼藻,但置于黑暗处,金鱼藻不能进行光合作用,而金鱼藻和金鱼呼吸作用要加快消耗完水中的溶解氧,存活时间没有A号瓶时间长。B、C两个瓶都有金鱼藻,置于阳光下,它们呼
The survival time of goldfish is C# bottle> B bottle> A bottle> D bottle. This is because there is no goldfish in No. A bottle and photosynthesis is not possible. Goldfish have no organic matter and no oxygen source. When the goldfish is consumed by respiration, Dissolved oxygen in the water died. There is goldfish in the bottle number D, but in the dark place, the goldfish can not photosynthesis, and the respiration of goldfish and goldfish to accelerate the dissolved oxygen in water consumption, the survival time is not long A bottle. Both bottles B and C have goldfish algae, placed in the sun, they call