【题目 】-Do you know how fish?-Well, they oxygen through their g ills(鳃) . A. swim; take away B. breathe; take in C. eat; come in D. drink; come back 相关知识点: 试题来源: 解析 【解析】 【答案】 B 【解析】 考查动词词义以及动词短语。 A.swim游泳;take away 带走; B.breathe...
How do I get more oxygen in my fish pond? A very simple way to add oxygen to the pond is to add an air pump. Sitting at the side of the pond, it will pump air through a small hose to an air stone and bubbles will enter the water. When the bubbles break the water's surface ...
.howfishbehave.ca 2 Inthelab,researchersnormallyreduceoxygenlevelsbyblowingbubblesofa physiologicallyneutralgas–usuallynitrogen–intothewater;nitrogenthenbecomes much more abundant than oxygen and displaces it as a dissolved gas. 4 One has to be ...
选 D小题1:细节题：The fish need room. They must not be crowded（拥挤）. Fish need oxygen(氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important.可知选D。小题1:细节题：从第二段的句子：...
Fish need oxygen(氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important.可知选D。小题1:细节题:从第二段的句子:The fish need room. They must not be crowded(拥挤).可知答案是A小题1:猜词题:从最后一段...
Learn how fish breathe underwater. Explore the fascinating process of gill respiration and how fish survive in aquatic environments!
Fish are the most common animal in the ocean. How do fish survive(存活under water? In fact, they have some body parts that help them live under water.Just like all other animals, fish need oxygen to survive. Fish breathe using their gills(腮) instead of lungs. Some body parts help fis...
What is an example of a cartilaginous fish? Can fish live below the thermocline in a body of water? How did dolphins get dorsal fins? Fish obtain oxygen by what method? How many species of cartilaginous fish are there? How are amphibian lungs different than ours?